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path: root/support/dktools/dk3maul.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: dk3maul.ctr
*/

/**	@file dk3maul.c The dk3maul module.
*/


#line 271 "dk3maul.ctr"



#include "dk3ma.h"
#include "dk3unused.h"





#line 280 "dk3maul.ctr"



unsigned long
dk3ma_ul_add_ok(unsigned long a, unsigned long b, int *ec)
{
  

#line 287 "dk3maul.ctr"
  if (NULL != ec) {		

#line 288 "dk3maul.ctr"
    if ((DK3_UL_MAX - a) < b) { *ec = DK3_ERROR_MATH_OVERFLOW; }
  } 

#line 290 "dk3maul.ctr"
  return (a + b);
}



unsigned long
dk3ma_ul_sub_ok(unsigned long a, unsigned long b, int *ec)
{
  

#line 299 "dk3maul.ctr"
  if (NULL != ec) {
    if (b > a) {		

#line 301 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_OVERFLOW;
    }
  }
  return (a - b);
}



unsigned long
dk3ma_ul_mul_ok(unsigned long a, unsigned long b, int *ec)
{
  

#line 313 "dk3maul.ctr"
  if (NULL != ec) {
    if (0UL != a) {
      if ((DK3_UL_MAX / a) < b) {	

#line 316 "dk3maul.ctr"
        *ec = DK3_ERROR_MATH_OVERFLOW;
      }
    }
  } 

#line 320 "dk3maul.ctr"
  return (a * b);
}


 
unsigned long
dk3ma_ul_div_ok(unsigned long a, unsigned long b, int *ec)
{
  unsigned long	back	=	0UL;
  

#line 330 "dk3maul.ctr"
  if (0UL != b) {
    back = a / b;
  } else {
    if (NULL != ec) {		

#line 334 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_DIVZERO;
    }
    back = DK3_UL_MAX;
  } 

#line 338 "dk3maul.ctr"
  return back;
}



unsigned long
dk3ma_ul_gcd(unsigned long a, unsigned long b)
{
  unsigned long	h;
  

#line 348 "dk3maul.ctr"
  while (0UL < b) {
    h = a % b;
    a = b;
    b = h;
  }
  if (0UL == a) { a = 1UL; } 

#line 354 "dk3maul.ctr"
  return a;
}



#if DK3_HAVE_LONG_LONG

unsigned long long
dk3ma_ull_add_ok(unsigned long long a, unsigned long long b, int *ec)
{
#if DK3_ON_WINDOWS
  

#line 366 "dk3maul.ctr"
#else
  

#line 368 "dk3maul.ctr"
#endif
  if (NULL != ec) {
    if ((DK3_ULL_MAX - a) < b) {	

#line 371 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_OVERFLOW;
    }
  }
#if DK3_ON_WINDOWS
  

#line 376 "dk3maul.ctr"
#else
  

#line 378 "dk3maul.ctr"
#endif
  return (a + b);
}



unsigned long long
dk3ma_ull_sub_ok(unsigned long long a, unsigned long long b, int *ec)
{
#if DK3_ON_WINDOWS
  

#line 389 "dk3maul.ctr"
#else
  

#line 391 "dk3maul.ctr"
#endif
  if (NULL != ec) {
    if (b > a) {			

#line 394 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_OVERFLOW;
    }
  }
#if DK3_ON_WINDOWS
  

#line 399 "dk3maul.ctr"
#else
  

#line 401 "dk3maul.ctr"
#endif
  return (a - b);
}



unsigned long long
dk3ma_ull_mul_ok(unsigned long long a, unsigned long long b, int *ec)
{
#if DK3_ON_WINDOWS
  

#line 412 "dk3maul.ctr"
#else
  

#line 414 "dk3maul.ctr"
#endif
  if (NULL != ec) {
    if (0ULL != a) {			

#line 417 "dk3maul.ctr"
      if ((DK3_ULL_MAX / a) < b) { *ec = DK3_ERROR_MATH_OVERFLOW; }
    }
  }
#if DK3_ON_WINDOWS
  

#line 422 "dk3maul.ctr"
#else
  

#line 424 "dk3maul.ctr"
#endif
  return (a * b);
}



unsigned long long
dk3ma_ull_div_ok(unsigned long long a, unsigned long long b, int *ec)
{
  unsigned long long	back	=	(unsigned long long)0;
#if DK3_ON_WINDOWS
  

#line 436 "dk3maul.ctr"
#else
  

#line 438 "dk3maul.ctr"
#endif
  if (0ULL != b) {
    back = a / b;
  } else {
    if (NULL != ec) {			

#line 443 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_DIVZERO;
    }
    back = DK3_ULL_MAX;
  }
#if DK3_ON_WINDOWS
  

#line 449 "dk3maul.ctr"
#else
  

#line 451 "dk3maul.ctr"
#endif
  return back;
}



unsigned long long
dk3ma_ull_gcd(unsigned long long a, unsigned long long b)
{
  unsigned long long	h;
#if DK3_ON_WINDOWS
  

#line 463 "dk3maul.ctr"
#else
  

#line 465 "dk3maul.ctr"
#endif
  while (0ULL < b) {
    h = a % b;
    a = b;
    b = h;
  }
  if (0ULL == a) { a = 1ULL; }
#if DK3_ON_WINDOWS
  

#line 474 "dk3maul.ctr"
#else
  

#line 476 "dk3maul.ctr"
#endif
  return a;
}


#endif



#if DK3_HAVE_INTMAX_T

uintmax_t
dk3ma_uintmax_t_add_ok(uintmax_t a, uintmax_t b, int *ec)
{
#if DK3_ON_WINDOWS
  

#line 492 "dk3maul.ctr"
#else
  

#line 494 "dk3maul.ctr"
#endif
  if (NULL != ec) {
    if ((DK3_UINTMAX_T_MAX - a) < b) {	

#line 497 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_OVERFLOW;
    }
  }
#if DK3_ON_WINDOWS
  

#line 502 "dk3maul.ctr"
#else
  

#line 504 "dk3maul.ctr"
#endif
  return (a + b);
}



uintmax_t
dk3ma_uintmax_t_sub_ok(uintmax_t a, uintmax_t b, int *ec)
{
#if DK3_ON_WINDOWS
  

#line 515 "dk3maul.ctr"
#else
  

#line 517 "dk3maul.ctr"
#endif
  if (NULL != ec) {
    if (b > a) {			

#line 520 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_OVERFLOW;
    }
  }
#if DK3_ON_WINDOWS
  

#line 525 "dk3maul.ctr"
#else
  

#line 527 "dk3maul.ctr"
#endif
  return (a - b);
}



uintmax_t
dk3ma_uintmax_t_mul_ok(uintmax_t a, uintmax_t b, int *ec)
{
#if DK3_ON_WINDOWS
  

#line 538 "dk3maul.ctr"
#else
  

#line 540 "dk3maul.ctr"
#endif
  if (NULL != ec) {
    if (DK3_UINTMAX_T_0 != a) {
      if ((DK3_UINTMAX_T_MAX / a) < b) {	

#line 544 "dk3maul.ctr"
        *ec = DK3_ERROR_MATH_OVERFLOW;
      }
    }
  }
#if DK3_ON_WINDOWS
  

#line 550 "dk3maul.ctr"
#else
  

#line 552 "dk3maul.ctr"
#endif
  return (a * b);
}



uintmax_t
dk3ma_uintmax_t_div_ok(uintmax_t a, uintmax_t b, int *ec)
{
  uintmax_t	back	=	(uintmax_t)0;
#if DK3_ON_WINDOWS
  

#line 564 "dk3maul.ctr"
#else
  

#line 566 "dk3maul.ctr"
#endif
  if (DK3_UINTMAX_T_0 != b) {
    back = a / b;
  } else {
    if (NULL != ec) {			

#line 571 "dk3maul.ctr"
      *ec = DK3_ERROR_MATH_DIVZERO;
    }
    back = DK3_UINTMAX_T_MAX;
  }
#if DK3_ON_WINDOWS
  

#line 577 "dk3maul.ctr"
#else
  

#line 579 "dk3maul.ctr"
#endif
  return back;
}



uintmax_t
dk3ma_uintmax_t_gcd(uintmax_t a, uintmax_t b)
{
  uintmax_t	h;
#if DK3_ON_WINDOWS
  

#line 591 "dk3maul.ctr"
#else
  

#line 593 "dk3maul.ctr"
#endif
  while (DK3_UINTMAX_T_0 < b) {
    h = a % b;
    a = b;
    b = h;
  }
  if (DK3_UINTMAX_T_0 == a) { a = DK3_UINTMAX_T_1; }
#if DK3_ON_WINDOWS
  

#line 602 "dk3maul.ctr"
#else
  

#line 604 "dk3maul.ctr"
#endif
  return a;
}


#endif



dk3_um_t
dk3ma_um_add_ok(dk3_um_t a, dk3_um_t b, int *ec)
{
#if DK3_HAVE_INTMAX_T
  return (dk3ma_uintmax_t_add_ok(a, b, ec));
#else
#if DK3_HAVE_LONG_LONG
  return (dk3ma_ull_add_ok(a, b, ec));
#else
  return (dk3ma_ul_add_ok(a, b, ec));
#endif
#endif
}



dk3_um_t
dk3ma_um_sub_ok(dk3_um_t a, dk3_um_t b, int *ec)
{
#if DK3_HAVE_INTMAX_T
  return (dk3ma_uintmax_t_sub_ok(a, b, ec));
#else
#if DK3_HAVE_LONG_LONG
  return (dk3ma_ull_sub_ok(a, b, ec));
#else
  return (dk3ma_ul_sub_ok(a, b, ec));
#endif
#endif
}



dk3_um_t
dk3ma_um_mul_ok(dk3_um_t a, dk3_um_t b, int *ec)
{
#if DK3_HAVE_INTMAX_T
  return (dk3ma_uintmax_t_mul_ok(a, b, ec));
#else
#if DK3_HAVE_LONG_LONG
  return (dk3ma_ull_mul_ok(a, b, ec));
#else
  return (dk3ma_ul_mul_ok(a, b, ec));
#endif
#endif
}



dk3_um_t
dk3ma_um_div_ok(dk3_um_t a, dk3_um_t b, int *ec)
{
#if DK3_HAVE_INTMAX_T
  return (dk3ma_uintmax_t_div_ok(a, b, ec));
#else
#if DK3_HAVE_LONG_LONG
  return (dk3ma_ull_div_ok(a, b, ec));
#else
  return (dk3ma_ul_div_ok(a, b, ec));
#endif
#endif
}



dk3_um_t
dk3ma_um_gcd(dk3_um_t a, dk3_um_t b)
{
#if DK3_HAVE_INTMAX_T
  return (dk3ma_uintmax_t_gcd(a, b));
#else
#if DK3_HAVE_LONG_LONG
  return (dk3ma_ull_gcd(a, b));
#else
  return (dk3ma_ul_gcd(a, b));
#endif
#endif
}



size_t
dk3ma_um_to_sz(dk3_um_t um, int * DK3_ARG_UNUSED(ec) )
{
  size_t	back = 0;

  DK3_UNUSED_ARG(ec)
#if DK3_SIZEOF_SIZE_T >= DK3_SIZEOF_UM
  back = (size_t)um;
#else
  if ((dk3_um_t)DK3_SIZE_T_MAX >= um) {
    back = (size_t)um;
  } else {
    if (NULL != ec) { *ec = DK3_ERROR_MATH_OVERFLOW; }
  }
#endif
  return back;
}