rtGetNaN.cpp

//
// Academic License - for use in teaching, academic research, and meeting
// course requirements at degree granting institutions only.  Not for
// government, commercial, or other organizational use.
//
// File: rtGetNaN.cpp
//
// Code generated for Simulink model 'obstacleStopper'.
//
// Model version                  : 1.86
// Simulink Coder version         : 9.0 (R2018b) 24-May-2018
// C/C++ source code generated on : Fri May 24 15:32:42 2019
//
// Target selection: ert.tlc
// Embedded hardware selection: Generic->Unspecified (assume 32-bit Generic)
// Code generation objectives: Unspecified
// Validation result: Not run
//

//
//  Abstract:
//       Function to initialize non-finite, NaN
#include "rtGetNaN.h"
#define NumBitsPerChar                 8U

extern "C" {
  //
  // 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;
  }

  //
  // 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;
  }
}
//
// File trailer for generated code.
//
// [EOF]
//