diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/dktools/dk4maasz.ctr |
Initial commit
Diffstat (limited to 'support/dktools/dk4maasz.ctr')
-rw-r--r-- | support/dktools/dk4maasz.ctr | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/support/dktools/dk4maasz.ctr b/support/dktools/dk4maasz.ctr new file mode 100644 index 0000000000..b96dd28159 --- /dev/null +++ b/support/dktools/dk4maasz.ctr @@ -0,0 +1,128 @@ +%% options + +copyright owner = Dirk Krause +copyright year = 2015-xxxx +license = bsd + + +%% header + +/** @file + Arithmetic operations on size_t. + + CRT on Windows: Optional. +*/ + +#ifndef DK4CONF_H_INCLUDED +#include "dk4conf.h" +#endif + +#ifndef DK4TYPES_H_INCLUDED +#include "dk4types.h" +#endif + +#ifndef DK4ERROR_H_INCLUDED +#include "dk4error.h" +#endif + + + +#ifdef __cplusplus +extern "C" { +#endif + +/** Addition of size_t values. + @param a Left operand. + @param b Right operand. + @param erp Error report, may be NULL. + @return Result. +*/ +size_t +dk4ma_size_t_add(size_t a, size_t b, dk4_er_t *erp); + +/** Difference of size_t values. + @param a Left operand. + @param b Right operand. + @param erp Error report, may be NULL. + @return Result. +*/ +size_t +dk4ma_size_t_sub(size_t a, size_t b, dk4_er_t *erp); + +/** Multiplication of size_t values. + @param a Left operand. + @param b Right operand. + @param erp Error report, may be NULL. + @return Result. +*/ +size_t +dk4ma_size_t_mul(size_t a, size_t b, dk4_er_t *erp); + +#ifdef __cplusplus +} +#endif + +%% module + +#include "dk4conf.h" +#include "dk4types.h" + +#if DK4_HAVE_LIMITS_H +#ifndef LIMITS_H_INCLUDED +#include <limits.h> +#define LIMITS_H_INCLUDED 1 +#endif +#endif +#if DK4_HAVE_STDINT_H +#ifndef STDINT_H_INCLUDED +#if defined(__cplusplus) && (!defined(__STDC_LIMIT_MACROS)) +#define __STDC_LIMIT_MACROS 1 +#endif +#if defined(__cplusplus) && (!defined(__STDC_CONSTANT_MACROS)) +#define __STDC_CONSTANT_MACROS 1 +#endif +#include <stdint.h> +#define STDINT_H_INCLUDED 1 +#endif +#endif + +#include "dk4error.h" +#include "dk4maasz.h" +#include "dk4error.h" +#include "dk4numco.h" + + + +size_t +dk4ma_size_t_add(size_t a, size_t b, dk4_er_t *erp) +{ + if ((SIZE_MAX - b) < a) { + dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); + } + return (a + b); +} + + + +size_t +dk4ma_size_t_sub(size_t a, size_t b, dk4_er_t *erp) +{ + if (b > a) { + dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); + } + return (a - b); +} + + + +size_t +dk4ma_size_t_mul(size_t a, size_t b, dk4_er_t *erp) +{ + if ((0 < a) && (0 < b)) { + if ((SIZE_MAX / a) < b) { + dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); + } + } + return (a * b); +} + |