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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: dk3maui.ctr
*/
/** @file dk3maui.c The dk3maui module.
*/
#line 98 "dk3maui.ctr"
#include "dk3ma.h"
#line 106 "dk3maui.ctr"
unsigned
dk3ma_ui_add_ok(unsigned a, unsigned b, int *ec)
{
if (NULL != ec) {
if ((DK3_U_MAX - a) < b) { *ec = DK3_ERROR_MATH_OVERFLOW; }
}
return (a + b);
}
unsigned
dk3ma_ui_sub_ok(unsigned a, unsigned b, int *ec)
{
if (NULL != ec) { if (b > a) { *ec = DK3_ERROR_MATH_OVERFLOW; } }
return (a - b);
}
unsigned
dk3ma_ui_mul_ok(unsigned a, unsigned b, int *ec)
{
if (NULL != ec) {
if (0U != a) {
if ((DK3_U_MAX / a) < b) { *ec = DK3_ERROR_MATH_OVERFLOW; }
}
}
return (a * b);
}
unsigned
dk3ma_ui_div_ok(unsigned a, unsigned b, int *ec)
{
unsigned back = (unsigned)0;
if (0U != b) {
back = a / b;
} else {
if (NULL != ec) { *ec = DK3_ERROR_MATH_DIVZERO; }
back = DK3_U_MAX;
}
return back;
}
unsigned
dk3ma_ui_gcd(unsigned a, unsigned b)
{
unsigned h;
while (0U < b) {
h = a % b;
a = b;
b = h;
}
if (0U == a) { a = 1U; }
return a;
}
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