/* * rtGetNaN.c * * Code generation for function 'myFunc' * * C source code generated on: Thu Mar 29 12:55:13 2012 * */ /* * 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) */