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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: dk4maaul.ctr
*/
/** @file dk4maaul.c The dk4maaul module.
*/
#line 122 "dk4maaul.ctr"
#include "dk4conf.h"
#include "dk4types.h"
#include "dk4error.h"
#include "dk4numco.h"
#include "dk4maaul.h"
#line 132 "dk4maaul.ctr"
unsigned long
dk4ma_ulong_add(unsigned long a, unsigned long b, dk4_er_t *erp)
{
#line 139 "dk4maaul.ctr"
#line 140 "dk4maaul.ctr"
#line 141 "dk4maaul.ctr"
#line 142 "dk4maaul.ctr"
if ((ULONG_MAX - a) < b) {
#line 143 "dk4maaul.ctr"
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
#line 146 "dk4maaul.ctr"
return (a + b);
}
unsigned long
dk4ma_ulong_sub(unsigned long a, unsigned long b, dk4_er_t *erp)
{
if (b > a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
return (a - b);
}
unsigned long
dk4ma_ulong_mul(unsigned long a, unsigned long b, dk4_er_t *erp)
{
if (0UL < a) {
if ((ULONG_MAX / a) < b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
}
return (a * b);
}
unsigned long
dk4ma_ulong_div(unsigned long a, unsigned long b, dk4_er_t *erp)
{
if (0UL < b) {
return (a / b);
} else {
dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO);
return (unsigned long)(ULONG_MAX);
}
}
unsigned long
dk4ma_ulong_from(dk4_um_t u, dk4_er_t *erp)
{
if ((dk4_um_t)(ULONG_MAX) < u) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
return ((unsigned long)u);
}
unsigned long
dk4ma_ulong_from_double(double d, dk4_er_t *erp)
{
unsigned long back = 0UL;
if ((double)(ULONG_MAX) < d) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
back = ULONG_MAX;
}
else {
if (0.0 > d) {
dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW);
}
else {
back = (unsigned long)d;
}
}
return back;
}
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