4G/code/BCU/BCUModel/rt_nonfinite.c

#include "rtGetNaN.h"
#include "rtGetInf.h"
#include <stddef.h>
#include "rtwtypes.h"
#include "rt_nonfinite.h"
#define NumBitsPerChar                 8U

real_T rtInf;
real_T rtMinusInf;
real_T rtNaN;
real32_T rtInfF;
real32_T rtMinusInfF;
real32_T rtNaNF;
void rt_InitInfAndNaN(size_t realSize)
{
  (void) (realSize);
  rtNaN = rtGetNaN();
  rtNaNF = rtGetNaNF();
  rtInf = rtGetInf();
  rtInfF = rtGetInfF();
  rtMinusInf = rtGetMinusInf();
  rtMinusInfF = rtGetMinusInfF();
}

boolean_T rtIsInf(real_T value)
{
  return (boolean_T)((value==rtInf || value==rtMinusInf) ? 1U : 0U);
}

boolean_T rtIsInfF(real32_T value)
{
  return (boolean_T)(((value)==rtInfF || (value)==rtMinusInfF) ? 1U : 0U);
}

boolean_T rtIsNaN(real_T value)
{
  boolean_T result = (boolean_T) 0;
  size_t bitsPerReal = sizeof(real_T) * (NumBitsPerChar);
  if (bitsPerReal == 32U) {
    result = rtIsNaNF((real32_T)value);
  } else {
    union {
      LittleEndianIEEEDouble bitVal;
      real_T fltVal;
    } tmpVal;

    tmpVal.fltVal = value;
    result = (boolean_T)((tmpVal.bitVal.words.wordH & 0x7FF00000) == 0x7FF00000 &&
                         ( (tmpVal.bitVal.words.wordH & 0x000FFFFF) != 0 ||
                          (tmpVal.bitVal.words.wordL != 0) ));
  }

  return result;
}

boolean_T rtIsNaNF(real32_T value)
{
  IEEESingle tmp;
  tmp.wordL.wordLreal = value;
  return (boolean_T)( (tmp.wordL.wordLuint & 0x7F800000) == 0x7F800000 &&
                     (tmp.wordL.wordLuint & 0x007FFFFF) != 0 );
}