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path: root/support/dktools/dk3mafpe.c
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/*
Copyright (C) 2014-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk3mafpe.ctr
*/

/**	@file dk3mafpe.c The dk3mafpe module.
*/


#line 260 "dk3mafpe.ctr"

#include "dk3mafpe.h"





#line 266 "dk3mafpe.ctr"



#if TRACE_DEBUG

static
void
dk3mafpe_debug(dk3_ma_fpe_t fpes)
{
  

#line 276 "dk3mafpe.ctr"
  if (NULL != dktrace_file()) {
    if (0 != (fpes & DK3MAFPE_DIVBYZERO)) {
      fputs("DIVBYZERO\n", dktrace_file());
    }
    if (0 != (fpes & DK3MAFPE_INEXACT)) {
      fputs("INEXACT\n", dktrace_file());
    }
    if (0 != (fpes & DK3MAFPE_OVERFLOW)) {
      fputs("OVERFLOW\n", dktrace_file());
    }
    if (0 != (fpes & DK3MAFPE_UNDERFLOW)) {
      fputs("UNDERFLOW\n", dktrace_file());
    }
    if (0 != (fpes & DK3MAFPE_INVALID)) {
      fputs("INVALID\n", dktrace_file());
    }
  }
  

#line 294 "dk3mafpe.ctr"
}

#endif

dk3_ma_fpe_t
dk3mafpe_get(void)
{
#if DK3_ON_WINDOWS
#if DK3_HAVE__CLEARFP
#if TRACE_DEBUG
  dk3_ma_fpe_t	back;
  back = _statusfp();
  dk3mafpe_debug(back);
  return back;
#else
  return (_statusfp());
#endif
#else
  return 0;
#endif
#else
#if DK3_HAVE_FETESTEXCEPT
#if TRACE_DEBUG
  dk3_ma_fpe_t	back;
  back = fetestexcept(FE_ALL_EXCEPT);
  dk3mafpe_debug(back);
  return back;
#else
  return (fetestexcept(FE_ALL_EXCEPT));
#endif
#else
  return 0;
#endif
#endif
}



void
dk3mafpe_clear(void)
{
#if DK3_ON_WINDOWS
#if DK3_HAVE__CLEARFP
  (void)_clearfp();
#else

#endif
#else
#if DK3_HAVE_FETESTEXCEPT
  feclearexcept(FE_ALL_EXCEPT);
#else

#endif
#endif
}



dk3_ma_fpe_t
dk3mafpe_get_and_clear(void)
{
#if DK3_ON_WINDOWS
#if DK3_HAVE__CLEARFP
#if TRACE_DEBUG
  dk3_ma_fpe_t	back;
  back = _clearfp();
  dk3mafpe_debug(back);
  return back;
#else
  return (_clearfp());
#endif
#else
  return 0;
#endif
#else
#if DK3_HAVE_FETESTEXCEPT
  dk3_ma_fpe_t	back;
  back = fetestexcept(FE_ALL_EXCEPT);
  feclearexcept(FE_ALL_EXCEPT);
#if TRACE_DEBUG
  dk3mafpe_debug(back);
#endif
  return back;
#else
  return 0;
#endif
#endif
}



int
dk3mafpe_get_handling_type(void)
{
#if DK3_ON_WINDOWS
#if DK3_HAVE__CLEARFP
  return DK3_MA_FPE_HANDLING_CLEARFP;
#else
  return DK3_MA_FPE_HANDLING_NONE;
#endif
#else
#if DK3_HAVE_FETESTEXCEPT
  return DK3_MA_FPE_HANDLING_FETESTEXCEPT;
#else
  return DK3_MA_FPE_HANDLING_NONE;
#endif
#endif
}



int
dk3mafpe_isfinite(double x)
{
#if DK3_ON_WINDOWS
  int back = 0;
  if (_finite(x)) {
    back = 1;
  }
  return back;
#else
#if DK3_HAVE_ISFINITE
  int back = 0;
  if (isfinite(x)) {
    back = 1;
  }
  return back;
#else
#error "No function or macro isfinite(x) available!"
  return 1;
#endif
#endif
}




int
dk3mafpe_isnormal(double x)
{
#if DK3_ON_WINDOWS
  int	back	=	0;
  if (_finite(x)) {
    back = 1;
    switch (_fpclass(x)) {
      case _FPCLASS_ND: case _FPCLASS_PD: {
        back = 0;
      } break;
    }
  }
  return back;
#else
#if DK3_HAVE_ISNORMAL
  int	back = 0;
  if (isnormal(x)) {
    back = 1;
  }
  return back;
#else
#error "No function or macro isnormal(x) available!"
  return 1;
#endif
#endif
}