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<div class="title">egm2008_geoid_grid.cpp</div> </div>
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<a href="egm2008__geoid__grid_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// CLASSIFICATION: UNCLASSIFIED</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// File name: egm2008_geoid_grid.cpp //</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// Description of this module: //</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Utility software that interpolates EGM 2008 //</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// geoid heights from one of NGA's geoid height grids. //</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// This base class supports two geoid height interpolators: //</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// 1) the first one reads the entire worldwide EGM2008 grid //</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// before interpolating any geoid heights from the worldwide grid; //</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// 2) the second one does not read geoid height data from //</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// file until a user requests that a geoid height be computed; //</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// the 2nd interpolator then reads an Area of Interest //</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// (AOI) grid from file before interpolating from the AOI grid; //</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// the Area of Interest grid is refreshed, if needed, //</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// when users submit subsequent geoid height requests. //</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// Revision History: //</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// Date Name Description //</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// ----------- ------------ ----------------------------------------------//</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// 19 Nov 2010 RD Craig Release //</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// 27 Jan 2011 S. Gillis BAEts28121, Terrain Service rearchitecture //</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// 17 May 2011 T. Thompson BAEts27393, let user know when problem //</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// is due to undefined MSPCCS_DATA //</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// 30 May 2013 RD Craig MSP 1.3: ER29758 //</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// Added second constructor to //</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// permit multiple geoid-height grids //</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// when assessing relative interpolation errors. //</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"></span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// THIS PACKAGE REQUIRES NGA's WORLDWIDE GEOID HEIGHT GRID. THIS GRID'S</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// DIRECTORY PATH MUST BE SPECIFIED BY ENVIRONMENT VARIABLE "MSPCCS_DATA".</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// Note: Following common usage, this class uses the term </span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// "geoid height" to mean heights of the geoid above or</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// below the earth ellipsoid. The GeoidLibrary class confuses</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// the term "geoid height" with height of a point above or below the</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// geoid: these heights are properly called elevations or heights-above-MSL.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#include <fstream></span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#include <iomanip></span> <span class="comment">// DEBUG</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#include <iostream></span> <span class="comment">// DEBUG</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#include <string></span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#ifdef IRIXN32</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor"></span><span class="preprocessor">#include <math.h></span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor"></span><span class="preprocessor">#include <cmath></span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">/* DEBUG</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"></span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">using std::ios;</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">using std::cin;</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">using std::cout;</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">using std::endl;</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment">using std::setprecision;</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">using std::setw;</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment">END DEBUG */</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#include "<a class="code" href="_coordinate_conversion_exception_8h.html">CoordinateConversionException.h</a>"</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#include "<a class="code" href="egm2008__geoid__grid_8h.html">egm2008_geoid_grid.h</a>"</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="_m_g_r_s_8cpp.html#a002b2f4894492820fe708b1b7e7c5e70">EPSILON</a> = 1.0e-15; <span class="comment">// ~4 times machine epsilon</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="_m_g_r_s_8cpp.html#a598a3330b3c21701223ee0ca14316eca">PI</a> = 3.14159265358979323;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> PIDIV2 = PI / 2.0;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> TWOPI = 2.0 * <a class="code" href="_m_g_r_s_8cpp.html#a598a3330b3c21701223ee0ca14316eca">PI</a>; </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> DEG_PER_RAD = 180.0 / <a class="code" href="_m_g_r_s_8cpp.html#a598a3330b3c21701223ee0ca14316eca">PI</a>;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> RAD_PER_DEG = PI / 180.0;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> SEMI_MAJOR_AXIS = 6378137.0; <span class="comment">// WGS-84</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> FLATTENING = 1.0 / 298.257223563; <span class="comment">// WGS-84</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">using namespace </span>MSP;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// ***************************</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">// ** Public user functions **</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">// ***************************</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// ****************************************</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// * Default Egm2008GeoidGrid constructor *</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// ****************************************</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#af150617c1fe4a311d1af800eb50a11ca"> 101</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#af150617c1fe4a311d1af800eb50a11ca">Egm2008GeoidGrid::Egm2008GeoidGrid</a>( <span class="keywordtype">void</span> )</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// This function implements the</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// default Egm2008GeoidGrid constructor.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">//_mutex.lock(); // Use CCSThreadMutex function in constructors</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">int</span> length = 0;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">char</span>* pathName = NULL;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="comment">// Get reformatted geoid height grid's file name .....</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor">#ifdef NDK_BUILD</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor"></span> pathName = <span class="stringliteral">"/data/data/com.baesystems.msp.geotrans/lib/"</span>;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += pathName;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += <span class="stringliteral">"libegm2008grd.so"</span>;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor"></span> pathName = getenv( <span class="stringliteral">"MSPCCS_DATA"</span> ); </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">if</span> ( NULL == pathName )</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  strcpy( pathName, <span class="stringliteral">"../../data"</span> );</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  }</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  length = strlen( pathName );</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">for</span> (i = 0; i < length; i++) <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += pathName[i];</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="stringliteral">"/Und_min2.5x2.5_egm2008_WGS84_TideFree_reformatted"</span>;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">// BAEts27393 Reverse the change for this DR for plug-in backward </span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">// compatible with MSP 1.1, i.e. do not throw error when plug-in is</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// dropped into MSP 1.1 where EGM2008 data file is not available.</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">//int undefEnvVar = 0;</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">//FILE* fp = NULL; /* File pointer to file */</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"></span> <span class="comment">//char* fileName = new char[50];</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">//strcpy( fileName, "Und_min2.5x2.5_egm2008_WGS84_TideFree_reformatted" );</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"></span> <span class="comment">//char* dataPath = getenv( "MSPCCS_DATA" ); </span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">//if ( NULL == dataPath )</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="comment">//{</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="comment">// undefEnvVar = 1;</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// strcpy( dataPath, "../../data" );</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">//}</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"></span> <span class="comment">//std::string pathName = dataPath;</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="comment">//pathName.append("/");</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">//pathName.append(fileName);</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"></span> <span class="comment">//if ( ( fp = fopen( pathName.c_str(), "r" ) ) == NULL )</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="comment">//{</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">// ErrorControl errCtrl;</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// if ( 1 == undefEnvVar )</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// {</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// errCtrl.issueError( "Environment variable undefined: MSPCCS_DATA.",</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// "Egm2008GeoidGrid::Egm2008GeoidGrid");</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// }</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">// else</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">// {</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="comment">// std::string errMsg = "Unable to open ";</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="comment">// errMsg.append(pathName);</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// errCtrl.issueError( errMsg, "Egm2008GeoidGrid::Egm2008GeoidGrid" );</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">// }</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">//}</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">//fclose( fp );</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">//_gridFname = pathName.c_str();</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// Initialize base grid parameters .....</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a> = 20;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> = 0;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> = 0;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> = 0;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a> = 0;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a> = 0;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> = 0.0;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> = 0.0;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> = 0.0;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> = 0.0;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="comment">// The thread will be unlocked </span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="comment">// by a derived class constructor.</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> } <span class="comment">// End of default Egm2008GeoidGrid constuctor</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment">// ********************************************</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment">// * Non-default Egm2008GeoidGrid constructor *</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment">// ********************************************</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a58c283c968b14e563c68263060922ad3"> 208</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#af150617c1fe4a311d1af800eb50a11ca">Egm2008GeoidGrid::Egm2008GeoidGrid</a>( <span class="keyword">const</span> std::string &gridFname )</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> {</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="comment">// 30 May 2013: Version 1.00</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="comment">// This function implements a</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="comment">// non-default Egm2008GeoidGrid constructor.</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="comment">// Definition:</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="comment">// gridFname: The geoid height grid's file name; this</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="comment">// file name should not contain the directory path;</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">// this function will pre-pend the path</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="comment">// specified by environment variable MSPCCS_DATA.</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">int</span> length = 0;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordtype">char</span>* pathName = NULL;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// Get reformatted geoid height grid's file name .....</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="preprocessor">#ifdef NDK_BUILD</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="preprocessor"></span> pathName = <span class="stringliteral">"/data/data/com.baesystems.msp.geotrans/lib/"</span>;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += pathName;</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += <span class="stringliteral">"libegm2008grd.so"</span>;</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="preprocessor"></span> pathName = getenv( <span class="stringliteral">"MSPCCS_DATA"</span> ); </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> ( NULL == pathName )</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  {</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  strcpy( pathName, <span class="stringliteral">"../../data"</span> );</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  length = strlen( pathName );</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">for</span>( i = 0; i < length; i++ ) <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += pathName[ i ];</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += <span class="charliteral">'/'</span>;</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> += gridFname; </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// Initialize base grid parameters .....</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a> = 20;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> = 0;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> = 0;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> = 0;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a> = 0;</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a> = 0;</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> = 0.0;</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> = 0.0;</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> = 0.0;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> = 0.0;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> } <span class="comment">// End of non-default Egm2008GeoidGrid constructor</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment">// *************************************</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="comment">// * Egm2008GeoidGrid copy constructor *</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment">// *************************************</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#af150617c1fe4a311d1af800eb50a11ca">Egm2008GeoidGrid::Egm2008GeoidGrid</a> </div>
<div class="line"><a name="l00273"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#afc6ed20c73dbc637e429b507a11ddf68"> 273</a></span>  ( <span class="keyword">const</span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html">Egm2008GeoidGrid</a>& oldGrid ) <span class="comment">// input</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> {</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="comment">// This function implements the</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="comment">// Egm2008GeoidGrid copy constructor.</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="comment">// Definition:</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="comment">// oldGrid: The Egm2008GeoidGrid object being copied.</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#a9b91ffed8f73172347cee82c4df5f13b">lock</a>(); <span class="comment">// Use CCSThreadMutex function in copy constructors</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> </div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">// Copy worldwide grid's file name .....</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  _gridFname = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a>;</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// Copy grid's parameters .....</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  MAX_WSIZE = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a>;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  _nGridPad = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a>;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  _nGridRows = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a>;</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  _nGridCols = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>; </div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  _nOrigRows = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a>;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  _nOrigCols = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a>;</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  _baseLatitude = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a>;</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  _baseLongitude = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a>;</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  _dLat = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a>;</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  _dLon = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a>;</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">// The oldGrid object will be unlocked </span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="comment">// by a derived class copy constructor.</span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> } <span class="comment">// End of Egm2008GeoidGrid copy constuctor</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="comment">// *******************************</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment">// * Egm2008GeoidGrid destructor *</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="comment">// *******************************</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div>
<div class="line"><a name="l00318"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3896dcc55ae652944f347660dac57354"> 318</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3896dcc55ae652944f347660dac57354">Egm2008GeoidGrid::~Egm2008GeoidGrid</a> (<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> </div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="comment">// This function implements </span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">// the Egm2008GeoidGrid destructor. </span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  ;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> } <span class="comment">// End of Egm2008GeoidGrid destructor</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> </div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> </div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> <span class="comment">// ****************************************</span></div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="comment">// * Egm2008GeoidGrid assignment operator *</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="comment">// ****************************************</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> </div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html">Egm2008GeoidGrid</a>&</div>
<div class="line"><a name="l00335"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#af48845ce19fa0f8ff59ce426e0dae35f"> 335</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#af48845ce19fa0f8ff59ce426e0dae35f">Egm2008GeoidGrid::operator= </a>( <span class="keyword">const</span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html">Egm2008GeoidGrid</a>& oldGrid ) </div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> </div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="comment">// Definition:</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> </div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="comment">// oldGrid: The Egm2008GeoidGrid object being assigned.</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="comment">// This function implements the</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="comment">// Egm2008GeoidGrid assignment operator.</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> </div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#a9b91ffed8f73172347cee82c4df5f13b">lock</a>(); <span class="comment">// Use CCSThreadMutex function in assignments</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#a9b91ffed8f73172347cee82c4df5f13b">lock</a>();</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">if</span> ( <span class="keyword">this</span> == & oldGrid ) <span class="keywordflow">return</span> ( *<span class="keyword">this</span> );</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="comment">// Assign worldwide grid's file name .....</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a>;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> </div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="comment">// Assign grids' parameters .....</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a>;</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a>; </div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a>;</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> </div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a>;</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a>;</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> </div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a>;</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a>;</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> </div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a>;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a>;</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// The object will be unlocked by a </span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// derived class assignment operator.</span></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keywordflow">return</span>( *<span class="keyword">this</span> );</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> </div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> } <span class="comment">// End of Egm2008GeoidGrid assignment operator</span></div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> </div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> <span class="comment">// **********************</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="comment">// ** Hidden functions **</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span> <span class="comment">// **********************</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="comment">// **************************************</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span> <span class="comment">// * Retrieve user-specified grid point *</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> <span class="comment">// **************************************</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> </div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac1995352678dc366e056f8b346f76475"> 390</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac1995352678dc366e056f8b346f76475">Egm2008GeoidGrid::loadGridCoords</a>(</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordtype">int</span> i, <span class="comment">// input</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordtype">int</span> j, <span class="comment">// input</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordtype">double</span>& latitude, <span class="comment">// output</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordtype">double</span>& longitude ) <span class="comment">// output</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> {</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> </div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="comment">// This function retrieves geodetic</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="comment">// coordinates corresponding to geoid height posts.</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> </div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="comment">// This function allows users to supply </span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="comment">// indices refering to the worldwide grid's pad region.</span></div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="comment">// Definitions:</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="comment">// i: Worldwide grid post's row index. </span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// j: Worldwide grid post's column index.</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="comment">// latitude: Grid point's geodetic latitude (radians).</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="comment">// longitude: Grid point's geodetic longitude (radians).</span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> </div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="comment">// Thread locks are not needed here, because this function</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="comment">// can only be invoked from a bicubic spline geoidHeight function; the</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="comment">// thread locks, if any, reside in the bicubic spline's geoidHeight function.</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> </div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> LIMIT1 = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a>;</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> LIMIT2 = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> - 1;</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordtype">int</span> k;</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> </div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="comment">// EDIT THE INPUT AND INITIALIZE .....</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> </div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keywordflow">if</span> (( i < 0 ) || ( i >= <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> )) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> </div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordflow">while</span> ( j < 0 ) j += <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keywordflow">while</span> ( j >= <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> ) j -= <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> </div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="comment">// COMPUTE GEODETIC COORDINATES .....</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> </div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="comment">// Indices refer to Southern pad region .....</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> </div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordflow">if</span> ( i < LIMIT1 )</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  {</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  latitude = </div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  ( -PIDIV2 - <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> * double( i - LIMIT1 ));</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> </div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  k = j + ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a> / 2 );</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> </div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="keywordflow">if</span> ( k >= <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> ) k -= <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a>;</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> </div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  longitude = </div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> + <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> * double( k ));</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> </div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="comment">// Indices refer to NGA grid region .....</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span> </div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordflow">if</span> (( i >= LIMIT1 ) && ( i <= LIMIT2 ))</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  {</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  latitude = </div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> + <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> * double( i ));</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> </div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  longitude = </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> + <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> * double( j ));</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  }</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> </div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="comment">// Indices refer to Northern pad region .....</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span> </div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">if</span> ( i > LIMIT2 )</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  {</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  latitude = </div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  ( PIDIV2 - <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> * double( i - LIMIT2 )); </div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span> </div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  k = j + ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a> / 2 );</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> </div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="keywordflow">if</span> ( k >= <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> ) k -= <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a>;</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span> </div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  longitude = </div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> + <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> * double( k ));</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  }</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span> </div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  } <span class="comment">// End of exceptions' try block</span></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> </div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordflow">catch</span> ( ... ) { <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> </div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keywordflow">return</span>( 0 ); <span class="comment">// Normal-return flag</span></div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span> </div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> } <span class="comment">// End of function Egm2008GeoidGrid::loadGridCoords</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> </div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> </div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> <span class="comment">// **********************************************</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="comment">// * Compute a one-dimensional spline's moments *</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span> <span class="comment">// **********************************************</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span> </div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span> <span class="keywordtype">int</span> </div>
<div class="line"><a name="l00486"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab53263887ad075a952f68dda1416cdc5"> 486</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab53263887ad075a952f68dda1416cdc5">Egm2008GeoidGrid::initSpline</a>(</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordtype">int</span> n, <span class="comment">// input</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> posts[], <span class="comment">// input</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordtype">double</span> moments[] ) <span class="comment">// output</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> {</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="comment">// November 4, 2010: Version 1.00</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="comment">// February 12, 2011: Version 2.00:</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="comment">// new variable names following code review</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> </div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="comment">// Using equally-spaced abscissae, this</span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="comment">// function computes a one-dimensional spline's moments.</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span> </div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="comment">// This function assumes that the endmost </span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="comment">// support points' second derivatives are zero.</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span> </div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="comment">// Definitions:</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> </div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="comment">// moments: Spline moments (2nd derivatives) </span></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="comment">// that are evaluated at the spline's support </span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="comment">// points; this array contains at least n elements.</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="comment">// n: The spline's number of support points; the</span></div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="comment">// calling function ensures that 3 <= n <= 20.</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="comment">// posts: An array containing the support points' </span></div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="comment">// ordinates; this array contains at least n elements.</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span> </div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="comment">// w: An array that, on completion of the Gauss</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <span class="comment">// elimination step, contains the triangularized</span></div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="comment">// coefficient matrix' superdiagonal. Element w[0] </span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="comment">// DOES NOT contain a superdiagonal matrix element.</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> </div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="comment">// Thread locks are not needed here, because this function</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="comment">// can only be invoked from a bicubic spline geoidHeight function;</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="comment">// the thread locks reside in the bicubic spline's geoidHeight function.</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> </div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="comment">// This C++ function </span></div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="comment">// refines FORTRAN subroutine INITSP, </span></div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="comment">// which was originally written (July 1983) </span></div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="comment">// by Rene Forsberg, Institut Fur Erdmessung, </span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="comment">// Universitat Hannover, Federal Republic of Germany. </span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="comment">// NGA used this FORTRAN function in </span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="comment">// its internal EGM 2008 interpolation software.</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> </div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="comment">// References:</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> </div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="comment">// Einfuhrung in die Numerische Mathematik, Band I,</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="comment">// Josef Stoer,</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="comment">// Springer-Verlag, Heidelberg, 1972, pp 82 und 86</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> </div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="comment">// Introduction to Numerical Analysis,</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="comment">// Josef Stoer and Roland Bulirsch,</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="comment">// Springer-Verlag, New York 1980, </span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="comment">// Sections 2.4.1 - 2.4.2 (pp 93 - 102)</span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span> </div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="comment">// Algorithm:</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  </div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="comment">// For the special case of equally-</span></div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="comment">// spaced abscissae, where the first and</span></div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="comment">// last moments are zero, the moments are found by</span></div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="comment">// solving the linear tridiagonal system of equations</span></div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  </div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="comment">// .. .. .. .. .. ..</span></div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="comment">// : : : : : :</span></div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="comment">// : 2.0 0.0 : : m : : 0 :</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="comment">// : : : 0 : : :</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="comment">// : 0.5 2.0 0.5 : : m : : rhs :</span></div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="comment">// : : : 1 : : 1 :</span></div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="comment">// : 0.5 2.0 0.5 : : m : : rhs :</span></div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <span class="comment">// : : : 2 : = : 2 :,</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="comment">// : . : : : : :</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="comment">// : . : : : : . :</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="comment">// : . : : : : . :</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="comment">// : 0.5 2.0 0.5 : : : : . :</span></div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="comment">// : : : : : :</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="comment">// : 0.0 2.0 : : m : : 0 :</span></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="comment">// :. .: :. n-1.: :. .:</span></div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> </div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="comment">// where </span></div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span> </div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="comment">// 1) n is the number of support data points, </span></div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  </div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="comment">// 2) m is the j-th support point's unknown second derivative, </span></div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="comment">// j</span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  </div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <span class="comment">// .. </span></div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="comment">// : 0.0, j = 0, </span></div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="comment">// : </span></div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="comment">// : </span></div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="comment">// 3) rhs = : 3 * (y - 2 y + y ), 1 <= j <= (n-2), </span></div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="comment">// j : j+1 j j-1</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="comment">// : </span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="comment">// : 0.0, j = n - 1.</span></div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="comment">// :. </span></div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span> </div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <span class="comment">// This system of equations is never singular, </span></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="comment">// so tests for singularity are not necessary.</span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span> </div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="comment">// The coefficient matrix is tridiagonal,</span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="comment">// so system solution time is proportional </span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="comment">// to the number of moments being computed.</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> </div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> </div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> TWENTY = 20;</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span> </div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="keywordtype">int</span> k;</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span> </div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="keywordtype">double</span> p;</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span> </div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  <span class="keywordtype">double</span> w[ TWENTY ];</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span> </div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <span class="comment">// EDIT THE INPUT AND INITIALIZE .....</span></div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span> </div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="keywordflow">if</span> ( TWENTY != <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a> ) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span> </div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordflow">if</span> ( n < 3 ) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span> </div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  w[ 0 ] = 0.0;</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  moments[ 0 ] = 0.0;</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span> </div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="comment">// APPLY GAUSS ELIMINATION TO THE </span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="comment">// MOMENTS' TRI-DIAGONAL SYSTEM OF EQUATIONS .....</span></div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span> </div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keywordflow">for</span> (k = 2; k < n; k++) </div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  {</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  p = ( w[ k-2 ] / 2.0 ) + 2.0;</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  w[ k-1 ] = -0.5 / p;</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  moments[ k-1 ] = </div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  (3.0 * </div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  ( posts[ k ] - ( 2.0 * posts[ k-1 ]) + </div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  posts[ k-2 ]) - ( moments[ k-2 ] / 2.0 )) / p;</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  }</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span> </div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="comment">// SOLVE THE RESULTING BI-DIAGONAL SYSTEM .....</span></div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span> </div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  moments[ n-1 ] = 0.0;</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span> </div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <span class="keywordflow">for</span> (k = n - 1; k >= 2; k--) </div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  {</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  moments[ k-1 ] += ( w[ k-1 ] * moments[ k ]);</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  }</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span> </div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  } <span class="comment">// End of exceptions' try block</span></div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span> </div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="keywordflow">catch</span> ( ... ) { <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span> </div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  <span class="keywordflow">return</span>( 0 ); <span class="comment">// Normal-return flag</span></div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span> </div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span> } <span class="comment">// End of function Egm2008GeoidGrid::initSpline </span></div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span> </div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span> </div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span> <span class="comment">// ***************************************************</span></div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span> <span class="comment">// * Specialized one-dimensional spline interpolator *</span></div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span> <span class="comment">// ***************************************************</span></div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span> </div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span> <span class="keywordtype">double</span></div>
<div class="line"><a name="l00642"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad81b4e894ccf08ceddb246abe9635cd9"> 642</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad81b4e894ccf08ceddb246abe9635cd9">Egm2008GeoidGrid::spline</a>(</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="keywordtype">int</span> n, <span class="comment">// input</span></div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keywordtype">double</span> x, <span class="comment">// input</span></div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> posts[], <span class="comment">// input</span></div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> moments[] ) <span class="comment">// input</span></div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span> {</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  <span class="comment">// November 4, 2010: Version 1.00</span></div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="comment">// February 12, 2011: Version 2.00:</span></div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="comment">// new variable names following code review</span></div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span> </div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <span class="comment">// Using support points having </span></div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <span class="comment">// equally-spaced abscissae, this function quickly </span></div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="comment">// evaluates a cubic spline at an abscissa of interest.</span></div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span> </div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  <span class="comment">// Definitions:</span></div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span> </div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="comment">// moments: Spline moments (2nd derivatives) </span></div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="comment">// that were evaluated at the spline's support </span></div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="comment">// points; this array contains at least n elements.</span></div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <span class="comment">// n: The spline's number of support points; the</span></div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="comment">// calling function ensures that 3 <= n <= 20.</span></div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="comment">// posts: An array containing the support points' </span></div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="comment">// ordinates; this array has at least n elements.</span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  <span class="comment">// x: The interpolation argument;</span></div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <span class="comment">// (x == 0.0) ==> x equals the first support abscissa,</span></div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="comment">// (x == double(n-1) ==> x equals the final support abscissa.</span></div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span> </div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <span class="comment">// Thread locks are not needed here, because this function</span></div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="comment">// can only be invoked from a bicubic spline geoidHeight function;</span></div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  <span class="comment">// the thread locks reside in the bicubic spline's geoidHeight function.</span></div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span> </div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <span class="comment">// This C++ function </span></div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <span class="comment">// refines FORTRAN function SPLINE, </span></div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="comment">// which was originally written (June 1983) </span></div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  <span class="comment">// by Rene Forsberg, Institut Fur Erdmessung, </span></div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="comment">// Universitat Hannover, Federal Republic of Germany. </span></div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span> </div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="comment">// NGA used this FORTRAN function in </span></div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <span class="comment">// its internal EGM 2008 interpolation software.</span></div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span> </div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <span class="comment">// References:</span></div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span> </div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="comment">// Einfuhrung in die Numerische Mathematik, Band I,</span></div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  <span class="comment">// Josef Stoer,</span></div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="comment">// Springer-Verlag, Heidelberg, 1972, p 81</span></div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span> </div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="comment">// Introduction to Numerical Analysis,</span></div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="comment">// Josef Stoer and Roland Bulirsch,</span></div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <span class="comment">// Springer-Verlag, New York 1980, </span></div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="comment">// Sections 2.4.1 and 2.4.2 (pp 93 - 102)</span></div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span> </div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="comment">// When (x < 0) or (x > n-1), this function linearly</span></div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="comment">// extrapolates the dependent variable from the nearest</span></div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="comment">// support points. Recall that the endpoints' moments are zero.</span></div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span> </div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  <span class="keywordtype">double</span> height;</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> </div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> MIN_ABSCISSA = 0.0;</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span> </div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keywordtype">int</span> j;</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span> </div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keywordtype">double</span> dx;</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <span class="keywordtype">double</span> maxAbscissa;</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keywordtype">double</span> mJ;</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keywordtype">double</span> mJp1;</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span> </div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="comment">// Edit the input and initialize .....</span></div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span> </div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <span class="keywordflow">if</span> ( n < 3 )</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  {</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="keywordflow">throw</span> <a class="code" href="class_m_s_p_1_1_c_c_s_1_1_coordinate_conversion_exception.html">MSP::CCS::CoordinateConversionException</a>(</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="stringliteral">"Error: Egm2008GeoidGrid::spline: not enough points"</span>);</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  }</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span> </div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span> </div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  maxAbscissa = double( n - 1 );</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span> </div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="comment">// Use one-dimensional extrapolation or</span></div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <span class="comment">// interpolation to determine geoid height .....</span></div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span> </div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <span class="keywordflow">if</span> ( x <= MIN_ABSCISSA ) <span class="comment">// linear extrapolation</span></div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  {</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  height = </div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  posts[ 0 ] + </div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  ( x - MIN_ABSCISSA ) * </div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  ( posts[ 1 ] - posts[ 0 ] - </div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  ( moments[ 1 ] / 6.0 ));</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  }</div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( x >= maxAbscissa ) <span class="comment">// linear extrapolation</span></div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  {</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  height = </div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  posts[ n-1 ] + </div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  ( x - maxAbscissa ) *</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  ( posts[ n-1 ] - posts[ n-2 ] + </div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  ( moments[ n-2 ] / 6.0 ));</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  }</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keywordflow">else</span> <span class="comment">// cubic spline interpolation</span></div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  {</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  j = int( floor( x )); </div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span> </div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  dx = x - double( j );</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  mJ = moments[ j ];</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  mJp1 = moments[ j+1 ];</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span> </div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  height = <span class="comment">// compute geoid height using Horner's rule</span></div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  posts[ j ] +</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  dx * (( posts[ j+1 ] - posts[ j ] - </div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  ( mJ / 3.0 ) - ( mJp1 / 6.0 )) +</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  dx * (( mJ / 2.0 ) + </div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  dx * ( mJp1 - mJ ) / 6.0 ));</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  }</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span> </div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  } <span class="comment">// End of exceptions' try block</span></div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span> </div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <span class="keywordflow">catch</span> ( ... )</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  {</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="keywordflow">throw</span> <a class="code" href="class_m_s_p_1_1_c_c_s_1_1_coordinate_conversion_exception.html">MSP::CCS::CoordinateConversionException</a>(</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="stringliteral">"Error: Egm2008GeoidGrid::spline"</span>);</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  }</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span> </div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="keywordflow">return</span> ( height ); </div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span> </div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span> } <span class="comment">// End of function Egm2008GeoidGrid::spline </span></div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span> </div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span> </div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span> <span class="comment">// **************</span></div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span> <span class="comment">// * Swap bytes *</span></div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span> <span class="comment">// **************</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span> </div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00773"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d"> 773</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d">Egm2008GeoidGrid::swapBytes</a>(</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="keywordtype">void</span>* buffer, <span class="comment">// input & output</span></div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="keywordtype">size_t</span> size, <span class="comment">// input</span></div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="keywordtype">size_t</span> count ) <span class="comment">// input</span></div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span> {</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <span class="comment">// November 8, 2010: Version 1.00</span></div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span> </div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  <span class="comment">// This function swaps </span></div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="comment">// bytes when transforming between</span></div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <span class="comment">// BIG-ENDIAN and LITTLE-ENDIAN binary formats.</span></div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span> </div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="comment">// Definitions:</span></div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span> </div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  <span class="comment">// buffer: Buffer containing binary numbers.</span></div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  <span class="comment">// count: Number of data items in the buffer.</span></div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="comment">// size: Size (bytes) of each buffer data item.</span></div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span> </div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="comment">// Thread locks are not needed here, because this function</span></div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  <span class="comment">// can only be invoked from a bicubic spline geoidHeight function;</span></div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="comment">// the thread locks reside in the bicubic spline's geoidHeight function.</span></div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span> </div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="keywordtype">char</span> temp;</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span> </div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="keywordtype">char</span>* b = (<span class="keywordtype">char</span> *) buffer;</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span> </div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">size_t</span> c = 0; c < count; c ++ )</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  {</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">size_t</span> s = 0; s < ( size / 2 ); s++ )</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  {</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  temp = b[ c * size + s ];</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  b[ c * size + s] = b[ c * size + size - s - 1 ];</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  b[ c * size + size - s - 1] = temp;</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  }</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  }</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span> </div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span> } <span class="comment">// End of function Egm2008GeoidGrid::swapBytes</span></div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span> </div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span> </div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span> <span class="comment">// *************************************</span></div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span> <span class="comment">// * Find Southwest grid-point indices *</span></div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span> <span class="comment">// *************************************</span></div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span> </div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00816"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad4fdc86705a179966de58b823da84126"> 816</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad4fdc86705a179966de58b823da84126">Egm2008GeoidGrid::swGridIndices</a>(</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  <span class="keywordtype">double</span> latitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  <span class="keywordtype">double</span> longitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  <span class="keywordtype">int</span>& i, <span class="comment">// output</span></div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  <span class="keywordtype">int</span>& j ) <span class="comment">// output</span></div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span> {</div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span> </div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <span class="comment">// Given geodetic latitude and longitude, </span></div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <span class="comment">// this function finds indices to the nearest</span></div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="comment">// grid point TO THE SOUTHWEST of the input point.</span></div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  <span class="comment">// The indices refer to the padded version</span></div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  <span class="comment">// of NGA's worldwide worldwide geoid-height grid. </span></div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span> </div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  <span class="comment">// Definitions:</span></div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span> </div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="comment">// i: Worldwide grid's latitude index. </span></div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  <span class="comment">// j: Worldwide grid's longitude index.</span></div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="comment">// latitude: Input geodetic latitude (radians).</span></div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  <span class="comment">// longitude: Input geodetic longitude (radians).</span></div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span> </div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <span class="comment">// Thread locks are not needed here, because this function</span></div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="comment">// can only be invoked from a bicubic spline geoidHeight function;</span></div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  <span class="comment">// the thread locks reside in the bicubic spline's geoidHeight function.</span></div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span> </div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <span class="comment">// Edit the input and initialize .....</span></div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span> </div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span> </div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  <span class="keywordtype">double</span> maxLatitude;</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span> </div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  maxLatitude = </div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> + double( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - 1 ) * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> );</div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span> </div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keywordflow">if</span> (( latitude < <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> ) || </div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  ( latitude > maxLatitude )) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span> </div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keywordflow">while</span> ( longitude < 0.0 ) longitude += TWOPI;</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="keywordflow">while</span> ( longitude > TWOPI ) longitude -= TWOPI;</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span> </div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  <span class="comment">// Compute the indices .....</span></div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span> </div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  i = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> + int(( latitude + PIDIV2 ) / <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> );</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span> </div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  j = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> + int( longitude / <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> );</div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span> </div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  } <span class="comment">// End of exceptions' try block</span></div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span> </div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="keywordflow">catch</span> ( ... ) { <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span> </div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordflow">return</span>( 0 ); <span class="comment">// Normal-return flag</span></div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span> </div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span> } <span class="comment">// End of function Egm2008GeoidGrid::swGridIndices</span></div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span> </div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span> <span class="comment">// CLASSIFICATION: UNCLASSIFIED</span></div>
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