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spa: add and use spa_overflow macros

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Wim Taymans 2026-04-24 15:54:15 +02:00
parent 84f8230a47
commit 0f8d5c6e57
16 changed files with 149 additions and 50 deletions
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40
spa/include/spa/utils/overflow.h Normal file
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/* Simple Plugin API */
/* SPDX-FileCopyrightText: Copyright © 2026 Wim Taymans */
/* SPDX-License-Identifier: MIT */
#ifndef SPA_UTILS_OVERFLOW_H
#define SPA_UTILS_OVERFLOW_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Check for addition overflow
*
* Computes \a a + \a b and stores the result in \a *res.
* \return true if the addition overflowed, false otherwise
*/
#define spa_overflow_add(a, b, res) __builtin_add_overflow(a, b, res)
/**
* \brief Check for subtraction overflow
*
* Computes \a a - \a b and stores the result in \a *res.
* \return true if the subtraction overflowed, false otherwise
*/
#define spa_overflow_sub(a, b, res) __builtin_sub_overflow(a, b, res)
/**
* \brief Check for multiplication overflow
*
* Computes \a a * \a b and stores the result in \a *res.
* \return true if the multiplication overflowed, false otherwise
*/
#define spa_overflow_mul(a, b, res) __builtin_mul_overflow(a, b, res)
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_UTILS_OVERFLOW_H */