[babeltrace.git] / src / common / safe.h

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#include <stdbool.h>
#include <stdint.h>

static inline
bool bt_safe_to_mul_int64(int64_t a, int64_t b)
{
	if (a == 0 || b == 0) {
		return true;
	}

	return a < INT64_MAX / b;
}

static inline
bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b)
{
	if (a == 0 || b == 0) {
		return true;
	}

	return a < UINT64_MAX / b;
}

static inline
bool bt_safe_to_add_int64(int64_t a, int64_t b)
{
	return a <= INT64_MAX - b;
}

static inline
bool bt_safe_to_add_uint64(uint64_t a, uint64_t b)
{
	return a <= UINT64_MAX - b;
}
Commit	Line	Data
	1	/*
	2	* SPDX-License-Identifier: MIT
	3	*
	4	* Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	5	*/
	6
	7	#include <stdbool.h>
	8	#include <stdint.h>
	9
	10	static inline
	11	bool bt_safe_to_mul_int64(int64_t a, int64_t b)
	12	{
	13	if (a == 0 \|\| b == 0) {
	14	return true;
	15	}
	16
	17	return a < INT64_MAX / b;
	18	}
	19
	20	static inline
	21	bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b)
	22	{
	23	if (a == 0 \|\| b == 0) {
	24	return true;
	25	}
	26
	27	return a < UINT64_MAX / b;
	28	}
	29
	30	static inline
	31	bool bt_safe_to_add_int64(int64_t a, int64_t b)
	32	{
	33	return a <= INT64_MAX - b;
	34	}
	35
	36	static inline
	37	bool bt_safe_to_add_uint64(uint64_t a, uint64_t b)
	38	{
	39	return a <= UINT64_MAX - b;
	40	}