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/*
* rtGetNaN.c
*
* Code generation for function 'kalman_dlqe2'
*
* C source code generated on: Thu Feb 14 12:52:29 2013
*
*/
/*
* Abstract:
* MATLAB for code generation function to initialize non-finite, NaN
*/
#include "rtGetNaN.h"
#define NumBitsPerChar 8U
/* Function: rtGetNaN ==================================================
* Abstract:
* Initialize rtNaN needed by the generated code.
* NaN is initialized as non-signaling. Assumes IEEE.
*/
real_T rtGetNaN(void)
{
size_t bitsPerReal = sizeof(real_T) * (NumBitsPerChar);
real_T nan = 0.0;
if (bitsPerReal == 32U) {
nan = rtGetNaNF();
} else {
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 = 0xFFF80000U;
tmpVal.bitVal.words.wordL = 0x00000000U;
nan = tmpVal.fltVal;
break;
}
case BigEndian:
{
union {
BigEndianIEEEDouble bitVal;
real_T fltVal;
} tmpVal;
tmpVal.bitVal.words.wordH = 0x7FFFFFFFU;
tmpVal.bitVal.words.wordL = 0xFFFFFFFFU;
nan = tmpVal.fltVal;
break;
}
}
}
return nan;
}
/* Function: rtGetNaNF ==================================================
* Abstract:
* Initialize rtNaNF needed by the generated code.
* NaN is initialized as non-signaling. Assumes IEEE.
*/
real32_T rtGetNaNF(void)
{
IEEESingle nanF = { { 0 } };
uint16_T one = 1U;
enum {
LittleEndian,
BigEndian
} machByteOrder = (*((uint8_T *) &one) == 1U) ? LittleEndian : BigEndian;
switch (machByteOrder) {
case LittleEndian:
{
nanF.wordL.wordLuint = 0xFFC00000U;
break;
}
case BigEndian:
{
nanF.wordL.wordLuint = 0x7FFFFFFFU;
break;
}
}
return nanF.wordL.wordLreal;
}
/* End of code generation (rtGetNaN.c) */
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