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

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

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

#ifdef __cplusplus
extern "C" {
#endif

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;
}

#ifdef __cplusplus
}
#endif
Commit	Line	Data
0235b0db MJ	1	/*
	2	* SPDX-License-Identifier: MIT
	3	*
	4	* Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	5	*/
91d81473 MJ	6
	7	#include <stdbool.h>
	8	#include <stdint.h>
	9
97ebbaa0 PP	10	#ifdef __cplusplus
	11	extern "C" {
	12	#endif
	13
91d81473 MJ	14	static inline
	15	bool bt_safe_to_mul_int64(int64_t a, int64_t b)
	16	{
	17	if (a == 0 \|\| b == 0) {
	18	return true;
	19	}
	20
	21	return a < INT64_MAX / b;
	22	}
	23
	24	static inline
	25	bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b)
	26	{
	27	if (a == 0 \|\| b == 0) {
	28	return true;
	29	}
	30
	31	return a < UINT64_MAX / b;
	32	}
	33
	34	static inline
	35	bool bt_safe_to_add_int64(int64_t a, int64_t b)
	36	{
	37	return a <= INT64_MAX - b;
	38	}
	39
	40	static inline
	41	bool bt_safe_to_add_uint64(uint64_t a, uint64_t b)
	42	{
	43	return a <= UINT64_MAX - b;
	44	}
97ebbaa0 PP	45
	46	#ifdef __cplusplus
	47	}
	48	#endif