1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ -->
<head>
<title>Maxima 5.47.0 Manual: Gentran Evaluation Forms</title>
<meta name="description" content="Maxima 5.47.0 Manual: Gentran Evaluation Forms">
<meta name="keywords" content="Maxima 5.47.0 Manual: Gentran Evaluation Forms">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link href="maxima_toc.html#Top" rel="start" title="Top">
<link href="maxima_423.html#Function-and-Variable-Index" rel="index" title="Function and Variable Index">
<link href="maxima_toc.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="maxima_277.html#gentran_002dpkg" rel="up" title="gentran-pkg">
<link href="maxima_283.html#ggf_002dpkg" rel="next" title="ggf-pkg">
<link href="maxima_281.html#Gentran-Option-Variables" rel="previous" title="Gentran Option Variables">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.indentedblock {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
div.smalllisp {margin-left: 3.2em}
kbd {font-style:oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nocodebreak {white-space:nowrap}
span.nolinebreak {white-space:nowrap}
span.roman {font-family:serif; font-weight:normal}
span.sansserif {font-family:sans-serif; font-weight:normal}
ul.no-bullet {list-style: none}
body {color: black; background: white; margin-left: 8%; margin-right: 13%;
font-family: "FreeSans", sans-serif}
h1 {font-size: 150%; font-family: "FreeSans", sans-serif}
h2 {font-size: 125%; font-family: "FreeSans", sans-serif}
h3 {font-size: 100%; font-family: "FreeSans", sans-serif}
a[href] {color: rgb(0,0,255); text-decoration: none;}
a[href]:hover {background: rgb(220,220,220);}
div.textbox {border: solid; border-width: thin; padding-top: 1em;
padding-bottom: 1em; padding-left: 2em; padding-right: 2em}
div.titlebox {border: none; padding-top: 1em; padding-bottom: 1em;
padding-left: 2em; padding-right: 2em; background: rgb(200,255,255);
font-family: sans-serif}
div.synopsisbox {
border: none; padding-top: 1em; padding-bottom: 1em; padding-left: 2em;
padding-right: 2em; background: rgb(255,220,255);}
pre.example {border: 1px solid rgb(180,180,180); padding-top: 1em;
padding-bottom: 1em; padding-left: 1em; padding-right: 1em;
background-color: rgb(238,238,255)}
div.spacerbox {border: none; padding-top: 2em; padding-bottom: 2em}
div.image {margin: 0; padding: 1em; text-align: center}
div.categorybox {border: 1px solid gray; padding-top: 1em; padding-bottom: 1em;
padding-left: 1em; padding-right: 1em; background: rgb(247,242,220)}
img {max-width:80%; max-height: 80%; display: block; margin-left: auto; margin-right: auto}
-->
</style>
<link rel="icon" href="figures/favicon.ico">
<script src="https://polyfill.io/v3/polyfill.min.js?features=es6>"></script>
<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
</head>
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
<a name="Gentran-Evaluation-Forms"></a>
<div class="header">
<p>
Previous: <a href="maxima_281.html#Gentran-Option-Variables" accesskey="p" rel="previous">Gentran Option Variables</a>, Up: <a href="maxima_277.html#gentran_002dpkg" accesskey="u" rel="up">gentran-pkg</a> [<a href="maxima_toc.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="maxima_423.html#Function-and-Variable-Index" title="Index" rel="index">Index</a>]</p>
</div>
<a name="Gentran-Evaluation-Forms-1"></a>
<h3 class="section">61.5 Gentran Evaluation Forms</h3>
<p>The following special functions can be included in Maxima statements
which are to be translated by the gentran command to indicate that they
are to be partially or fully evaluated by Maxima before being translated
into numerical code. Note that these functions have the described effect
only when supplied in arguments to the gentran command.
</p>
<a name="Item_003a-gentran_002fdeffn_002feval"></a><dl>
<dt><a name="index-eval"></a>Function: <strong>eval</strong> <em>(<var>exp</var>)</em></dt>
<dd>
<p>Where <em>exp</em> is any Maxima expression or statement which, after
evaluation by Maxima, results in an expression that can be translated by
gentran into the target language. When eval is called from an argument
that is to be translated, it tells gentran to give the expression to
Maxima for evaluation first, and then to translate the result of that
evaluation.
</p></dd></dl>
<a name="Item_003a-gentran_002fdeffn_002frsetq"></a><dl>
<dt><a name="index-rsetq"></a>Function: <strong>rsetq</strong> <em>(<var>var</var>, <var>exp</var>)</em></dt>
<dd>
<p>Where <em>var</em> is any Maxima variable, matrix or array element, and
<em>exp</em> is any Maxima expression which, after evaluation by Maxima
results in an expression that can be translated by Gentran into the
target language. This is equivalent to VAR : EVAL(EXP) ;
</p></dd></dl>
<a name="Item_003a-gentran_002fdeffn_002flsetq"></a><dl>
<dt><a name="index-lsetq"></a>Function: <strong>lsetq</strong> <em>(<em>var</em>, <em>exp</em>)</em></dt>
<dd>
<p>Where <em>var</em> is any Maxima user level matrix or array element with
indices which, after evaluation by Maxima, will result in expressions
that can be translated by Gentran, and <em>exp</em> is any Maxima user
level expression that can be translated into the target language. This
is equivalent to <code>var[eval(s1), eval(s2), ...]: exp</code> where <var>s1</var>, <var>s2</var>, ...
are indices.
</p></dd></dl>
<a name="Item_003a-gentran_002fdeffn_002flrsetq"></a><dl>
<dt><a name="index-lrsetq"></a>Function: <strong>lrsetq</strong> <em>(<em>var</em>, <em>exp</em>)</em></dt>
<dd>
<p>Where <em>var</em> is any Maxima matrix or array element with indices
which, after evaluation by Maxima, will result in expressions that can
be translated by Gentran; and <em>exp</em> is any user level expression
which, after evaluation, will result in an expression that can be
translated by Gentran into the target language. This is equivalent to
<code>var[eval(s1), eval(s2), ...]: eval(exp);</code>.
</p></dd></dl>
<a name="Item_003a-gentran_002fdeffn_002ftype"></a><dl>
<dt><a name="index-type"></a>Function: <strong>type</strong> <em>(<em>type,v1…vn</em>)</em></dt>
<dd>
<p>Places information in the gentran symbol table to assign <em>type</em> to
variables <em>v1…vn</em>. This may result in type declarations
printed by gentran depending on the setting of gendecs. <strong>type</strong>
must be called from within gentran and does not evaluate its arguments
unless <strong>eval</strong>() is used.
</p>
</dd></dl>
<a name="Item_003a-gentran_002fdeffn_002fliteral"></a><dl>
<dt><a name="index-literal"></a>Function: <strong>literal</strong> <em>(<em>arg1, arg2, ... , argn</em>)</em></dt>
<dd>
<p>where arg1, arg2, ... , argn is an argument list containing one or more
arg’s, each of which either is, or evaluates to, an atom. The atoms
<em>tab</em> and <em>cr</em> have special meanings. arg’s are not evaluated
unless given as arguments to eval. This function call is replaced by the
character sequence resulting from concatenation of the given atoms.
Double quotes are stripped from all string type arg’s, and each
occurrence of the reserved atom <em>tab</em> or <em>cr</em> is replaced by a
tab to the current level of indentation, or an end-of-line character.
</p>
</dd></dl>
<hr>
<div class="header">
<p>
Previous: <a href="maxima_281.html#Gentran-Option-Variables" accesskey="p" rel="previous">Gentran Option Variables</a>, Up: <a href="maxima_277.html#gentran_002dpkg" accesskey="u" rel="up">gentran-pkg</a> [<a href="maxima_toc.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="maxima_423.html#Function-and-Variable-Index" title="Index" rel="index">Index</a>]</p>
</div>
</body>
</html>
|
