1 | /* |
2 | * rtGetNaN.c |
3 | * |
4 | * Code generation for model "BMS". |
5 | * |
6 | * Model version : 1.15 |
7 | * Simulink Coder version : 9.2 (R2019b) 18-Jul-2019 |
8 | * C source code generated on : Thu Aug 20 14:49:14 2020 |
9 | * |
10 | * Target selection: grt.tlc |
11 | * Note: GRT includes extra infrastructure and instrumentation for prototyping |
12 | * Embedded hardware selection: Intel->x86-64 (Windows64) |
13 | * Code generation objectives: Unspecified |
14 | * Validation result: Not run |
15 | */ |
16 | |
17 | /* |
18 | * Abstract: |
19 | * Function to initialize non-finite, NaN |
20 | */ |
21 | #include "rtGetNaN.h" |
22 | #define NumBitsPerChar 8U |
23 | |
24 | /* |
25 | * Initialize rtNaN needed by the generated code. |
26 | * NaN is initialized as non-signaling. Assumes IEEE. |
27 | */ |
28 | real_T rtGetNaN(void) |
29 | { |
30 | size_t bitsPerReal = sizeof(real_T) * (NumBitsPerChar); |
31 | real_T nan = 0.0; |
32 | if (bitsPerReal == 32U) { |
33 | nan = rtGetNaNF(); |
34 | } else { |
35 | uint16_T one = 1U; |
36 | enum { |
37 | LittleEndian, |
38 | BigEndian |
39 | } machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian; |
40 | switch (machByteOrder) { |
41 | case LittleEndian: |
42 | { |
43 | union { |
44 | LittleEndianIEEEDouble bitVal; |
45 | real_T fltVal; |
46 | } tmpVal; |
47 | |
48 | tmpVal.bitVal.words.wordH = 0xFFF80000U; |
49 | tmpVal.bitVal.words.wordL = 0x00000000U; |
50 | nan = tmpVal.fltVal; |
51 | break; |
52 | } |
53 | |
54 | case BigEndian: |
55 | { |
56 | union { |
57 | BigEndianIEEEDouble bitVal; |
58 | real_T fltVal; |
59 | } tmpVal; |
60 | |
61 | tmpVal.bitVal.words.wordH = 0x7FFFFFFFU; |
62 | tmpVal.bitVal.words.wordL = 0xFFFFFFFFU; |
63 | nan = tmpVal.fltVal; |
64 | break; |
65 | } |
66 | } |
67 | } |
68 | |
69 | return nan; |
70 | } |
71 | |
72 | /* |
73 | * Initialize rtNaNF needed by the generated code. |
74 | * NaN is initialized as non-signaling. Assumes IEEE. |
75 | */ |
76 | real32_T rtGetNaNF(void) |
77 | { |
78 | IEEESingle nanF = { { 0 } }; |
79 | |
80 | uint16_T one = 1U; |
81 | enum { |
82 | LittleEndian, |
83 | BigEndian |
84 | } machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian; |
85 | switch (machByteOrder) { |
86 | case LittleEndian: |
87 | { |
88 | nanF.wordL.wordLuint = 0xFFC00000U; |
89 | break; |
90 | } |
91 | |
92 | case BigEndian: |
93 | { |
94 | nanF.wordL.wordLuint = 0x7FFFFFFFU; |
95 | break; |
96 | } |
97 | } |
98 | |
99 | return nanF.wordL.wordLreal; |
100 | } |
101 |