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path: root/support/dktools/dk4maau16.c
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/*
Copyright (C) 2016-2020, 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: dk4maau16.ctr
*/

/**	@file dk4maau16.c The dk4maau16 module.
*/


#line 157 "dk4maau16.ctr"

#include "dk4conf.h"
#include "dk4maau16.h"





#line 164 "dk4maau16.ctr"



uint16_t
dk4ma_uint16_t_add(uint16_t a, uint16_t b, dk4_er_t *erp)
{
  if ((DK4_U16_MAX - a) < b) {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  return (a + b);
}



uint16_t
dk4ma_uint16_t_sub(uint16_t a, uint16_t b, dk4_er_t *erp)
{
  if (b > a) {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  return (a - b);
}



uint16_t
dk4ma_uint16_t_mul(uint16_t a, uint16_t b, dk4_er_t *erp)
{
  if ((0 < a) && (0 < b)) {
    if ((DK4_U16_MAX / a) < b) {
      dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
    }
  }
  return (a * b);
}



uint16_t
dk4ma_uint16_t_div(uint16_t a, uint16_t b, dk4_er_t *erp)
{
  uint16_t	back	= 0;

  if (0 != b) {
    back = a / b;
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO);
  }
  return back;
}



uint16_t
dk4ma_uint16_from(dk4_um_t u, dk4_er_t *erp)
{
	if ((dk4_um_t)(DK4_U16_MAX) < u) {
		dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	}
	return ((uint16_t)u);
}



uint16_t
dk4ma_uint16_from_double(double d, dk4_er_t *erp)
{
	uint16_t	back	= 0;
	if ((double)(DK4_U16_MAX) < d) {
		dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
		back = DK4_U16_MAX;
	}
	else {
		if (0.0 > d) {
			dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW);
		}
		else {
			back = (uint16_t)d;
		}
	}
	return back;
}