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-%% options
-
-copyright owner = Dirk Krause
-copyright year = 2015-xxxx
-SPDX-License-Identifier: BSD-3-Clause
-
-
-%% header
-
-/** @file
- Arithmetic operations on long long.
-
- CRT on Windows: Optional.
-*/
-
-#ifndef DK4CONF_H_INCLUDED
-#if DK4_BUILDING_DKTOOLS4
-#include "dk4conf.h"
-#else
-#include <dktools-4/dk4conf.h>
-#endif
-#endif
-
-#ifndef DK4TYPES_H_INCLUDED
-#if DK4_BUILDING_DKTOOLS4
-#include "dk4types.h"
-#else
-#include <dktools-4/dk4types.h>
-#endif
-#endif
-
-#ifndef DK4ERROR_H_INCLUDED
-#if DK4_BUILDING_DKTOOLS4
-#include "dk4error.h"
-#else
-#include <dktools-4/dk4error.h>
-#endif
-#endif
-
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if DK4_HAVE_LONG_LONG
-
-/** Absolute value.
- @param a Operand.
- @param erp Error report, may be NULL.
- @return Result on success, LLONG_MAX if a is LLONG_MIN
- (overflow is reported in erp).
-
- Error codes: DK4_E_OVERFLOW.
-*/
-long long
-dk4ma_ll_abs(long long a, dk4_er_t *erp);
-
-/** Addition.
- @param a Left operand.
- @param b Right operand.
- @param erp Error report, may be NULL.
- @return Result on success, least significant result bits
- on overflow (see ec component of erp).
-
- Error codes: DK4_E_OVERFLOW.
-*/
-long long
-dk4ma_ll_add(long long a, long long b, dk4_er_t *erp);
-
-/** Subtraction.
- @param a Left operand.
- @param b Right operand.
- @param erp Error report, may be NULL.
- @return Result on success, least significant result bits
- on overflow (see ec component of erp).
-
- Error codes: DK4_E_OVERFLOW.
-*/
-long long
-dk4ma_ll_sub(long long a, long long b, dk4_er_t *erp);
-
-/** Multiplication.
- @param a Left factor.
- @param b right factor.
- @param erp Error report, may be NULL.
- @return Result on success, least significant
- bits on overflow (see ec component of erp).
-
- Error codes: DK4_E_OVERFLOW.
-*/
-long long
-dk4ma_ll_mul(long long a, long long b, dk4_er_t *erp);
-
-/** Division.
- @param a Counter (left operand).
- @param b Denominator (right operand).
- @param erp Error report, may be NULL.
- @return Division result on success,
- LLONG_MIN, LLONG_MAX, or 0 on division by zero or overflow
- (see the ec component of erp).
-
- Error codes: DK4_E_OVERFLOW, DK4_E_DIVZERO.
-*/
-long long
-dk4ma_ll_div(long long a, long long b, dk4_er_t *erp);
-
-/** Convert dk4_im_t value to long long.
- @param i Value to convert.
- @param erp Error report, may be NULL.
- @return Conversion result.
-
- Error codes: DK4_E_OVERFLOW.
-*/
-long long
-dk4ma_ll_from(dk4_im_t i, dk4_er_t *erp);
-
-/** Convert double to signed char.
- @param d Value to convert.
- @param erp Error report, may be NULL.
- @return Conversion result.
-
- Error codes: DK4_E_OVERFLOW.
-*/
-long long
-dk4ma_ll_from_double(double d, dk4_er_t *erp);
-
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-
-%% module
-
-#include "dk4conf.h"
-#include "dk4types.h"
-#include "dk4error.h"
-#include "dk4numco.h"
-#include "dk4maall.h"
-
-
-#if DK4_HAVE_LONG_LONG
-
-long long
-dk4ma_ll_abs(long long a, dk4_er_t *erp)
-{
- if (LLONG_MIN == a) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- return ((0LL <= a) ? a : ((LLONG_MIN == a) ? LLONG_MAX : (0LL - a)));
-}
-
-
-
-long long
-dk4ma_ll_add(long long a, long long b, dk4_er_t *erp)
-{
- if ((0LL < a) && (0LL < b)) {
- if ((LLONG_MAX - a) < b) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- } else {
- if ((0LL > a) && (0LL > b)) {
- if (LLONG_MIN == a) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- } else {
- if ((LLONG_MIN - a) > b) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- }
- }
- }
- return (a + b);
-}
-
-
-
-long long
-dk4ma_ll_sub(long long a, long long b, dk4_er_t *erp)
-{
- if ((0LL < a) && (0LL > b)) {
- if ((LLONG_MAX + b) < a) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- } else {
- if ((0LL > a) && (0LL < b)) {
- if ((LLONG_MIN + b) > a) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- }
- }
- return (a - b);
-}
-
-
-
-long long
-dk4ma_ll_mul(long long a, long long b, dk4_er_t *erp)
-{
- if ((0LL != a) && (0LL != b)) {
- if (LLONG_MIN == a) {
- if (1LL != b) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- } else {
- if (LLONG_MIN == b) {
- if (1LL != a) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- } else {
- if (0LL < a) {
- if (0LL < b) {
- if ((LLONG_MAX / a) < b) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- } else {
- if ((LLONG_MIN / a) > b) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- }
- } else {
- if (0LL < b) {
- if ((LLONG_MIN / b) > a) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- } else {
- if ((LLONG_MAX / (0LL - a)) < (0LL - b)) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- }
- }
- }
- }
- }
- return (a * b);
-}
-
-
-
-long long
-dk4ma_ll_div(long long a, long long b, dk4_er_t *erp)
-{
- long long back = 0;
- if (0LL != b) {
- if ((LLONG_MIN == a) && (-1LL == b)) {
- back = LLONG_MAX;
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- } else {
- back = a / b;
- }
- } else {
- if (0LL < a) {
- back = LLONG_MAX;
- } else {
- if (0LL > a) {
- back = LLONG_MIN;
- }
- }
- dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO);
- }
- return back;
-}
-
-
-
-long long
-dk4ma_ll_from(dk4_im_t i, dk4_er_t *erp)
-{
- if (((dk4_im_t)(LLONG_MAX) < i) || ((dk4_im_t)(LLONG_MIN) > i)) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- }
- return ((long long)i);
-}
-
-
-
-long long
-dk4ma_ll_from_double(double d, dk4_er_t *erp)
-{
- long long back = 0LL;
- if ((double)(LLONG_MIN) > d) {
- dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
- back = LLONG_MIN;
- }
- else {
- if ((double)(LLONG_MAX) < d) {
- dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW);
- back = LLONG_MAX;
- }
- else {
- back = (long long)d;
- }
- }
- return back;
-}
-
-
-
-#endif
-