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
|
/*
* Copyright (C) 2017 Analog Devices, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
/*
* Abstract:
* MATLAB for code generation function to initialize non-finite, Inf and MinusInf
*/
#include "rtGetInf.h"
#define NumBitsPerChar 8U
/* Function: rtGetInf ==================================================
* Abstract:
* Initialize rtInf needed by the generated code.
* Inf is initialized as non-signaling. Assumes IEEE.
*/
real_T rtGetInf(void)
{
real_T inf = 0.0;
uint16_T one = 1U;
enum {
LittleEndian,
BigEndian
} machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian;
switch (machByteOrder) {
case LittleEndian: {
union {
LittleEndianIEEEDouble bitVal;
real_T fltVal;
} tmpVal;
tmpVal.bitVal.words.wordH = 0x7FF00000U;
tmpVal.bitVal.words.wordL = 0x00000000U;
inf = tmpVal.fltVal;
break;
}
case BigEndian: {
union {
BigEndianIEEEDouble bitVal;
real_T fltVal;
} tmpVal;
tmpVal.bitVal.words.wordH = 0x7FF00000U;
tmpVal.bitVal.words.wordL = 0x00000000U;
inf = tmpVal.fltVal;
break;
}
}
return inf;
}
/* Function: rtGetInfF ==================================================
* Abstract:
* Initialize rtInfF needed by the generated code.
* Inf is initialized as non-signaling. Assumes IEEE.
*/
real32_T rtGetInfF(void)
{
IEEESingle infF;
infF.wordL.wordLuint = 0x7F800000U;
return infF.wordL.wordLreal;
}
/* Function: rtGetMinusInf ==================================================
* Abstract:
* Initialize rtMinusInf needed by the generated code.
* Inf is initialized as non-signaling. Assumes IEEE.
*/
real_T rtGetMinusInf(void)
{
real_T minf = 0.0;
uint16_T one = 1U;
enum {
LittleEndian,
BigEndian
} machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian;
switch (machByteOrder) {
case LittleEndian: {
union {
LittleEndianIEEEDouble bitVal;
real_T fltVal;
} tmpVal;
tmpVal.bitVal.words.wordH = 0xFFF00000U;
tmpVal.bitVal.words.wordL = 0x00000000U;
minf = tmpVal.fltVal;
break;
}
case BigEndian: {
union {
BigEndianIEEEDouble bitVal;
real_T fltVal;
} tmpVal;
tmpVal.bitVal.words.wordH = 0xFFF00000U;
tmpVal.bitVal.words.wordL = 0x00000000U;
minf = tmpVal.fltVal;
break;
}
}
return minf;
}
/* Function: rtGetMinusInfF ==================================================
* Abstract:
* Initialize rtMinusInfF needed by the generated code.
* Inf is initialized as non-signaling. Assumes IEEE.
*/
real32_T rtGetMinusInfF(void)
{
IEEESingle minfF;
minfF.wordL.wordLuint = 0xFF800000U;
return minfF.wordL.wordLreal;
}
/*
* File trailer for rtGetInf.c
*
* [EOF]
*/
|
