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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: dk4maalu.ctr
*/
/** @file dk4maalu.c The dk4maalu module.
*/
#line 126 "dk4maalu.ctr"
#include "dk4conf.h"
#include "dk4types.h"
#include "dk4error.h"
#include "dk4numco.h"
#include "dk4maalu.h"
#line 136 "dk4maalu.ctr"
#if DK4_HAVE_LONG_LONG
unsigned long long
dk4ma_ull_add(unsigned long long a, unsigned long long b, dk4_er_t *erp)
{
if ((ULLONG_MAX - a) < b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
return (unsigned long long)(a + b);
}
unsigned long long
dk4ma_ull_sub(unsigned long long a, unsigned long long b, dk4_er_t *erp)
{
if (b > a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
return (unsigned long long)(a - b);
}
unsigned long long
dk4ma_ull_mul(unsigned long long a, unsigned long long b, dk4_er_t *erp)
{
if (0ULL < a) {
if ((ULLONG_MAX / a) < b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
}
return (unsigned long long)(a * b);
}
unsigned long long
dk4ma_ull_div(unsigned long long a, unsigned long long b, dk4_er_t *erp)
{
#line 180 "dk4maalu.ctr"
if (0ULL < b) {
#line 182 "dk4maalu.ctr"
return (unsigned long long)(a / b);
} else {
dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO);
#line 186 "dk4maalu.ctr"
return (unsigned long long)(ULLONG_MAX);
}
}
unsigned long long
dk4ma_ull_from(dk4_um_t u, dk4_er_t *erp)
{
if ((dk4_um_t)(ULLONG_MAX) < u) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
return ((unsigned long long)u);
}
unsigned long long
dk4ma_ull_from_double(double d, dk4_er_t *erp)
{
unsigned long long back = 0ULL;
if ((double)(ULLONG_MAX) < d) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
back = ULLONG_MAX;
}
else {
if (0.0 > d) {
dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW);
}
else {
back = (unsigned long long)d;
}
}
return back;
}
#endif
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