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/*
Copyright (C) 2015-2020, 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: dk4maamu.ctr
*/

/**	@file dk4maamu.c The dk4maamu module.
*/


#line 106 "dk4maamu.ctr"

#include "dk4conf.h"
#include "dk4types.h"
#include "dk4error.h"
#include "dk4numco.h"
#include "dk4maamu.h"



#if DK4_HAVE_INTMAX_T

uintmax_t
dk4ma_uintmax_t_add(uintmax_t a, uintmax_t b, dk4_er_t *erp)
{
  if ((UINTMAX_MAX - a) < b) {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  return (uintmax_t)(a + b);
}



uintmax_t
dk4ma_uintmax_t_sub(uintmax_t a, uintmax_t b, dk4_er_t *erp)
{
  if (b > a) {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  return (uintmax_t)(a - b);
}



uintmax_t
dk4ma_uintmax_t_mul(uintmax_t a, uintmax_t b, dk4_er_t *erp)
{
  if ((uintmax_t)0UL < a) {
    if ((UINTMAX_MAX / a) < b) {
      dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
    }
  }
  return (uintmax_t)(a * b);
}



uintmax_t
dk4ma_uintmax_t_div(uintmax_t a, uintmax_t b, dk4_er_t *erp)
{
  if ((uintmax_t)0UL < b) {
    return (uintmax_t)(a / b);
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO);
    return (uintmax_t)(UINTMAX_MAX);
  }
}

#endif