1 | /* |
2 | * rtGetInf.c |
3 | * |
4 | * Classroom License -- for classroom instructional use only. Not for |
5 | * government, commercial, academic research, or other organizational use. |
6 | * |
7 | * Code generation for model "RaspberrySmithPredictor". |
8 | * |
9 | * Model version : 1.1 |
10 | * Simulink Coder version : 8.11 (R2016b) 25-Aug-2016 |
11 | * C source code generated on : Tue Dec 20 14:52:06 2016 |
12 | * |
13 | * Target selection: ert.tlc |
14 | * Note: GRT includes extra infrastructure and instrumentation for prototyping |
15 | * Embedded hardware selection: ARM Compatible->ARM Cortex |
16 | * Code generation objectives: Unspecified |
17 | * Validation result: Not run |
18 | */ |
19 | |
20 | /* |
21 | * Abstract: |
22 | * Function to initialize non-finite, Inf |
23 | */ |
24 | #include "rtGetInf.h" |
25 | #define NumBitsPerChar 8U |
26 | |
27 | /* |
28 | * Initialize rtInf needed by the generated code. |
29 | * Inf is initialized as non-signaling. Assumes IEEE. |
30 | */ |
31 | real_T rtGetInf(void) |
32 | { |
33 | size_t bitsPerReal = sizeof(real_T) * (NumBitsPerChar); |
34 | real_T inf = 0.0; |
35 | if (bitsPerReal == 32U) { |
36 | inf = rtGetInfF(); |
37 | } else { |
38 | uint16_T one = 1U; |
39 | enum { |
40 | LittleEndian, |
41 | BigEndian |
42 | } machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian; |
43 | switch (machByteOrder) { |
44 | case LittleEndian: |
45 | { |
46 | union { |
47 | LittleEndianIEEEDouble bitVal; |
48 | real_T fltVal; |
49 | } tmpVal; |
50 | |
51 | tmpVal.bitVal.words.wordH = 0x7FF00000U; |
52 | tmpVal.bitVal.words.wordL = 0x00000000U; |
53 | inf = tmpVal.fltVal; |
54 | break; |
55 | } |
56 | |
57 | case BigEndian: |
58 | { |
59 | union { |
60 | BigEndianIEEEDouble bitVal; |
61 | real_T fltVal; |
62 | } tmpVal; |
63 | |
64 | tmpVal.bitVal.words.wordH = 0x7FF00000U; |
65 | tmpVal.bitVal.words.wordL = 0x00000000U; |
66 | inf = tmpVal.fltVal; |
67 | break; |
68 | } |
69 | } |
70 | } |
71 | |
72 | return inf; |
73 | } |
74 | |
75 | /* |
76 | * Initialize rtInfF needed by the generated code. |
77 | * Inf is initialized as non-signaling. Assumes IEEE. |
78 | */ |
79 | real32_T rtGetInfF(void) |
80 | { |
81 | IEEESingle infF; |
82 | infF.wordL.wordLuint = 0x7F800000U; |
83 | return infF.wordL.wordLreal; |
84 | } |
85 | |
86 | /* |
87 | * Initialize rtMinusInf needed by the generated code. |
88 | * Inf is initialized as non-signaling. Assumes IEEE. |
89 | */ |
90 | real_T rtGetMinusInf(void) |
91 | { |
92 | size_t bitsPerReal = sizeof(real_T) * (NumBitsPerChar); |
93 | real_T minf = 0.0; |
94 | if (bitsPerReal == 32U) { |
95 | minf = rtGetMinusInfF(); |
96 | } else { |
97 | uint16_T one = 1U; |
98 | enum { |
99 | LittleEndian, |
100 | BigEndian |
101 | } machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian; |
102 | switch (machByteOrder) { |
103 | case LittleEndian: |
104 | { |
105 | union { |
106 | LittleEndianIEEEDouble bitVal; |
107 | real_T fltVal; |
108 | } tmpVal; |
109 | |
110 | tmpVal.bitVal.words.wordH = 0xFFF00000U; |
111 | tmpVal.bitVal.words.wordL = 0x00000000U; |
112 | minf = tmpVal.fltVal; |
113 | break; |
114 | } |
115 | |
116 | case BigEndian: |
117 | { |
118 | union { |
119 | BigEndianIEEEDouble bitVal; |
120 | real_T fltVal; |
121 | } tmpVal; |
122 | |
123 | tmpVal.bitVal.words.wordH = 0xFFF00000U; |
124 | tmpVal.bitVal.words.wordL = 0x00000000U; |
125 | minf = tmpVal.fltVal; |
126 | break; |
127 | } |
128 | } |
129 | } |
130 | |
131 | return minf; |
132 | } |
133 | |
134 | /* |
135 | * Initialize rtMinusInfF needed by the generated code. |
136 | * Inf is initialized as non-signaling. Assumes IEEE. |
137 | */ |
138 | real32_T rtGetMinusInfF(void) |
139 | { |
140 | IEEESingle minfF; |
141 | minfF.wordL.wordLuint = 0xFF800000U; |
142 | return minfF.wordL.wordLreal; |
143 | } |
144 |