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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: dk4maami.ctr
*/
/** @file dk4maami.c The dk4maami module.
*/
#line 116 "dk4maami.ctr"
#include "dk4conf.h"
#include "dk4types.h"
#include "dk4error.h"
#include "dk4numco.h"
#include "dk4maami.h"
#if DK4_HAVE_INTMAX_T
intmax_t
dk4ma_intmax_t_abs(intmax_t a, dk4_er_t *erp)
{
if (INTMAX_MIN == a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
return (((intmax_t)0L <= a) ? a : ((INTMAX_MIN == a) ? INTMAX_MAX : ((intmax_t)0L - a)));
}
intmax_t
dk4ma_intmax_t_add(intmax_t a, intmax_t b, dk4_er_t *erp)
{
if (((intmax_t)0L < a) && ((intmax_t)0L < b)) {
if ((INTMAX_MAX - a) < b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
} else {
if (((intmax_t)0L > a) && ((intmax_t)0L > b)) {
if (INTMAX_MIN == a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
} else {
if ((INTMAX_MIN - a) > b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
}
}
}
return (a + b);
}
intmax_t
dk4ma_intmax_t_sub(intmax_t a, intmax_t b, dk4_er_t *erp)
{
if (((intmax_t)0L < a) && ((intmax_t)0L > b)) {
if ((INTMAX_MAX + b) < a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
} else {
if (((intmax_t)0L > a) && ((intmax_t)0L < b)) {
if ((INTMAX_MIN + b) > a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
}
}
return (a - b);
}
intmax_t
dk4ma_intmax_t_mul(intmax_t a, intmax_t b, dk4_er_t *erp)
{
if (((intmax_t)0L != a) && ((intmax_t)0L != b)) {
if (INTMAX_MIN == a) {
if ((intmax_t)1L != b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
} else {
if (INTMAX_MIN == b) {
if ((intmax_t)1L != a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
} else {
if ((intmax_t)0L < a) {
if ((intmax_t)0L < b) {
if ((INTMAX_MAX / a) < b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
} else {
if ((INTMAX_MIN / a) > b) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
}
} else {
if ((intmax_t)0L < b) {
if ((INTMAX_MIN / b) > a) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
} else {
if ((INTMAX_MAX / ((intmax_t)0L - a)) < ((intmax_t)0L - b)) {
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
}
}
}
}
}
return (a * b);
}
intmax_t
dk4ma_intmax_t_div(intmax_t a, intmax_t b, dk4_er_t *erp)
{
intmax_t back = 0;
if ((intmax_t)0L != b) {
if ((INTMAX_MIN == a) && ((intmax_t)(-1L) == b)) {
back = INTMAX_MAX;
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
} else {
back = a / b;
}
} else {
if ((intmax_t)0L < a) {
back = INTMAX_MAX;
} else {
if ((intmax_t)0L > a) {
back = INTMAX_MIN;
}
}
dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO);
}
return back;
}
#endif
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