1 | /* |
2 | * File: rtGetNaN.c |
3 | * |
4 | * Code generated for Simulink model 'EV3Control_sil_sil_ec'. |
5 | * |
6 | * Model version : 1.2 |
7 | * Simulink Coder version : 9.0 (R2018b) 24-May-2018 |
8 | * C/C++ source code generated on : Tue Oct 29 09:31:45 2019 |
9 | */ |
10 | |
11 | /* |
12 | * Abstract: |
13 | * Function to initialize non-finite, NaN |
14 | */ |
15 | #include "rtGetNaN.h" |
16 | #define NumBitsPerChar 8U |
17 | |
18 | /* |
19 | * Initialize rtNaN needed by the generated code. |
20 | * NaN is initialized as non-signaling. Assumes IEEE. |
21 | */ |
22 | real_T rtGetNaN(void) |
23 | { |
24 | size_t bitsPerReal = sizeof(real_T) * (NumBitsPerChar); |
25 | real_T nan = 0.0; |
26 | if (bitsPerReal == 32U) { |
27 | nan = rtGetNaNF(); |
28 | } else { |
29 | uint16_T one = 1U; |
30 | enum { |
31 | LittleEndian, |
32 | BigEndian |
33 | } machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian; |
34 | switch (machByteOrder) { |
35 | case LittleEndian: |
36 | { |
37 | union { |
38 | LittleEndianIEEEDouble bitVal; |
39 | real_T fltVal; |
40 | } tmpVal; |
41 | |
42 | tmpVal.bitVal.words.wordH = 0xFFF80000U; |
43 | tmpVal.bitVal.words.wordL = 0x00000000U; |
44 | nan = tmpVal.fltVal; |
45 | break; |
46 | } |
47 | |
48 | case BigEndian: |
49 | { |
50 | union { |
51 | BigEndianIEEEDouble bitVal; |
52 | real_T fltVal; |
53 | } tmpVal; |
54 | |
55 | tmpVal.bitVal.words.wordH = 0x7FFFFFFFU; |
56 | tmpVal.bitVal.words.wordL = 0xFFFFFFFFU; |
57 | nan = tmpVal.fltVal; |
58 | break; |
59 | } |
60 | } |
61 | } |
62 | |
63 | return nan; |
64 | } |
65 | |
66 | /* |
67 | * Initialize rtNaNF needed by the generated code. |
68 | * NaN is initialized as non-signaling. Assumes IEEE. |
69 | */ |
70 | real32_T rtGetNaNF(void) |
71 | { |
72 | IEEESingle nanF = { { 0 } }; |
73 | |
74 | uint16_T one = 1U; |
75 | enum { |
76 | LittleEndian, |
77 | BigEndian |
78 | } machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian; |
79 | switch (machByteOrder) { |
80 | case LittleEndian: |
81 | { |
82 | nanF.wordL.wordLuint = 0xFFC00000U; |
83 | break; |
84 | } |
85 | |
86 | case BigEndian: |
87 | { |
88 | nanF.wordL.wordLuint = 0x7FFFFFFFU; |
89 | break; |
90 | } |
91 | } |
92 | |
93 | return nanF.wordL.wordLreal; |
94 | } |
95 | |
96 | /* |
97 | * File trailer for generated code. |
98 | * |
99 | * [EOF] |
100 | */ |
101 |