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path: root/support/dktools/dk3md.c
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/*
	WARNING: This file was generated by dkct.
	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: dk3md.ctr
*/

/*
Copyright (C) 2013-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**	@file dk3md.c The dk3md module.
*/


#line 283 "dk3md.ctr"

#include "dk3all.h"
#include "dk3md.h"
#include <math.h>


/**	Maximum value for long double.
*/
#define	DK3_MAX_LONG_DOUBLE	DK3_MAX_DOUBLE

#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)

/*	Real long double	(start)
*/

/**	Conversion format strings in dkChar size.
*/
static dkChar const * const	dk3md_conversion_formats[] = {
dkT("%Le"),
dkT("%Lf"),
dkT("%Lg"),
NULL
};

/**	Conversion format strings in char size.
*/
static char const * const	dk3md_c8_conversion_formats[] = {
"%Le",
"%Lf",
"%Lg",
NULL
};

/*	Real long double	(end)
*/

#else

/*	Fallback to normal double	(start)
*/

/**	Conversion format strings in dkChar size.
*/
static dkChar const * const	dk3md_conversion_formats[] = {
dkT("%le"),
dkT("%lf"),
dkT("%lg"),
NULL
};

/**	Conversion format strings in char size.
*/
static char const * const	dk3md_c8_conversion_formats[] = {
"%le",
"%lf",
"%lg",
NULL
};

/*	Fallback to normal double	(end)
*/

#endif


dkChar const *
dk3md_format(char c)
{
  dkChar const	*back;

  back = dk3md_conversion_formats[0];
  switch(c) {
    case 'f': case 'F': {
      back = dk3md_conversion_formats[1];
    } break;
    case 'g': case 'G': {
      back = dk3md_conversion_formats[2];
    } break;
  }
  return back;
}



char const *
dk3md_c8_format(char c)
{
  char const	*back;

  back = dk3md_c8_conversion_formats[0];
  switch(c) {
    case 'f': case 'F': {
      back = dk3md_c8_conversion_formats[1];
    } break;
    case 'g': case 'G': {
      back = dk3md_c8_conversion_formats[2];
    } break;
  }
  return back;
}



int
dk3md_have_long_double(void)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
  return 1;
#else
  return 0;
#endif
}



dk3_double_t	dk3md_add_ok(dk3_double_t a, dk3_double_t b, int *ec)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
  double		back;
  if(a >= 0.0L) {
    if(b >= 0.0L) {
      back = a + b;
      if((DK3_MAX_LONG_DOUBLE - a) < b) {
        if(ec) { *ec = DK3_ERROR_MATH_OVERFLOW; }
      }
    } else {
      back = a + b;
    }
  } else {
    if(b >= 0.0L) {
      back = a + b;
    } else {
      back = -1.0L * dk3md_add_ok(fabsl(a), fabsl(b), ec);
    }
  }
  return back;
#else
  return(dk3ma_d_add_ok(a, b, ec));
#endif
}



dk3_double_t	dk3md_sub_ok(dk3_double_t a, dk3_double_t b, int *ec)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
  double		back;
  if(a >= 0.0L) {
    if(b >= 0.0L) {
      back = a - b;
    } else {
      back = dk3md_add_ok(a, fabsl(b), ec);
    }
  } else {
    if(b >= 0.0L) {
      back = -1.0L * dk3md_add_ok(fabsl(a), b, ec);
    } else {
      back = a - b;
    }
  }
  return back;
#else
  return(dk3ma_d_sub_ok(a, b, ec));
#endif
}



dk3_double_t	dk3md_mul_ok(dk3_double_t a, dk3_double_t b, int *ec)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
  double		back;
  if(a >= 0.0L) {
    if(b >= 0.0L) {
      back = a * b;
      if(a > 1.0L) {
        if((DK3_MAX_LONG_DOUBLE / a) < b) {
	  if(ec) { *ec = DK3_ERROR_MATH_OVERFLOW; }
	}
      }
    } else {
      back = -1.0L * dk3md_mul_ok(a, fabsl(b), ec);
    }
  } else {
    if(b >= 0.0L) {
      back = -1.0L * dk3md_mul_ok(fabsl(a), b, ec);
    } else {
      back = dk3md_mul_ok(fabsl(a), fabsl(b), ec);
    }
  }
  return back;
#else
  return(dk3ma_d_mul_ok(a, b, ec));
#endif
}



dk3_double_t	dk3md_div_ok(dk3_double_t a, dk3_double_t b, int *ec)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
  double		back;
  if(a >= 0.0L) {
    if(b >= 0.0L) {
      if(b < 1.0L) {
        if((DK3_MAX_LONG_DOUBLE * b) > a) {
	  back = a / b;
	} else {
	  back = 0.0L;
	  if(ec) { *ec = DK3_ERROR_MATH_DIVZERO; }
	}
      } else {
        back = a / b;
      }
    } else {
      back = -1.0L * dk3md_div_ok(a, fabsl(b), ec);
    }
  } else {
    if(b >= 0.0L) {
      back = -1.0L * dk3md_div_ok(fabsl(a), b, ec);
    } else {
      back = dk3md_div_ok(fabsl(a), fabsl(b), ec);
    }
  }
  return back;
#else
  return(dk3ma_d_div_ok(a, b, ec));
#endif
}



dk3_double_t
dk3md_sin(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_SINL
  return(sinl(x));
#else
  return((long double)sin((double)(x)));
#endif
#else
  return(sin(x));
#endif
}



dk3_double_t
dk3md_cos(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_COSL
  return(cosl(x));
#else
  return((long double)cos((double)(x)));
#endif
#else
  return(cos(x));
#endif
}



dk3_double_t
dk3md_tan(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_TANL
  return(tanl(x));
#else
  return((long double)tan((double)(x)));
#endif
#else
  return(tan(x));
#endif
}



dk3_double_t
dk3md_asin(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_ASINL
  return(asinl(x));
#else
  return((long double)asin((double)(x)));
#endif
#else
  return(asin(x));
#endif
}



dk3_double_t
dk3md_acos(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_ACOSL
  return(acosl(x));
#else
  return((long double)acos((double)(x)));
#endif
#else
  return(acos(x));
#endif
}



dk3_double_t
dk3md_atan(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_ATANL
  return(atanl(x));
#else
  return((long double)atan((double)(x)));
#endif
#else
  return(atan(x));
#endif
}



dk3_double_t
dk3md_atan2(dk3_double_t y, dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_ATAN2L
  return(atan2l(y, x));
#else
#if DK3_HAVE_ATAN2
  return((long double)atan2((double)(y), (double)(x)));
#else
  return((long double)dk3ma_d_atan2((double)y, (double)x));
#endif
#endif
#else
#if DK3_HAVE_ATAN2
  return(atan2(y, x));
#else
  return(dk3ma_d_atan2(y,x));
#endif
#endif
}



dk3_double_t
dk3md_fabs(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_FABSL
  return(fabsl(x));
#else
  return((long double)fabs((double)(x)));
#endif
#else
  return(fabs(x));
#endif
}



dk3_double_t
dk3md_floor(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_FLOORL
  return(floorl(x));
#else
  return((long double)floor((double)(x)));
#endif
#else
  return(floor(x));
#endif
}



dk3_double_t
dk3md_ceil(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_CEILL
  return(ceill(x));
#else
  return((long double)ceil((double)(x)));
#endif
#else
  return(ceil(x));
#endif
}



dk3_double_t
dk3md_rint(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_RINTL
  return(rintl(x));
#else
#if DK3_HAVE_RINT
  return((long double)rint((double)(x)));
#else
  return((long double)dk3ma_d_rint((double)(x)));
#endif
#endif
#else
#if DK3_HAVE_RINT
  return(rint(x));
#else
  return(dk3ma_d_rint(x));
#endif
#endif
}



dk3_double_t
dk3md_exp(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_EXPL
  return(expl(x));
#else
  return((long double)exp((double)(x)));
#endif
#else
  return(exp(x));
#endif
}



dk3_double_t
dk3md_log(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_LOGL
  return(logl(x));
#else
  return((long double)log((double)(x)));
#endif
#else
  return(log(x));
#endif
}



dk3_double_t
dk3md_sqrt(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_SQRTL
  return(sqrtl(x));
#else
  return((long double)sqrt((double)(x)));
#endif
#else
  return(sqrt(x));
#endif
}



dk3_double_t
dk3md_sinh(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_SINHL
  return(sinhl(x));
#else
  return((long double)sinh((double)(x)));
#endif
#else
  return(sinh(x));
#endif
}



dk3_double_t
dk3md_cosh(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_COSHL
  return(coshl(x));
#else
  return((long double)cosh((double)(x)));
#endif
#else
  return(cosh(x));
#endif
}



dk3_double_t
dk3md_tanh(dk3_double_t x)
{
#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if DK3_HAVE_TANHL
  return(tanhl(x));
#else
  return((long double)tanh((double)(x)));
#endif
#else
  return(tanh(x));
#endif
}



#if DK3_HAVE_LONG_DOUBLE && (DK3_SIZEOF_LONG_DOUBLE > DK3_SIZEOF_DOUBLE)
#if (DK3_HAVE_ASINHL) && (DK3_HAVE_ACOSHL) && (DK3_HAVE_ATANHL)

dk3_double_t
dk3md_asinh(dk3_double_t x)
{
  return(asinhl(x));
}


dk3_double_t
dk3md_acosh(dk3_double_t x)
{
  return(acoshl(x));
}


dk3_double_t
dk3md_atanh(dk3_double_t x)
{
  return(atanhl(x));
}

#else
#if (DK3_HAVE_ASINH) && (DK3_HAVE_ACOSH) && (DK3_HAVE_ATANH)

dk3_double_t
dk3md_asinh(dk3_double_t x)
{
  return((long double)asinh((double)x));
}


dk3_double_t
dk3md_acosh(dk3_double_t x)
{
  return((long double)acosh((double)x));
}


dk3_double_t
dk3md_atanh(dk3_double_t x)
{
  return((long double)atanh((double)x));
}

#else
#if (DK3_NEED_ASINH) || (DK3_NEED_ACOSH) || (DK3_NEED_ATANH)
#error	"No asinh/acosh/atanh function in math library!"
#endif
#endif
#endif
#else

#if (DK3_HAVE_ASINH) && (DK3_HAVE_ACOSH) && (DK3_HAVE_ATANH)

dk3_double_t
dk3md_asinh(dk3_double_t x)
{
  return(asinh(x));
}


dk3_double_t
dk3md_acosh(dk3_double_t x)
{
  return(acosh(x));
}


dk3_double_t
dk3md_atanh(dk3_double_t x)
{
  return(atanh(x));
}

#else
#if (DK3_NEED_ASINH) || (DK3_NEED_ACOSH) || (DK3_NEED_ATANH)
#error	"No asinh/acosh/atanh function in math library!"
#endif
#endif
#endif