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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __STDLIB_H
#define __STDLIB_H
#include <types.h>
#define RAND_MAX 32767
/* return a pseudo-random integer in the range [0, RAND_MAX] */
unsigned int rand(void);
/* set the seed for rand () */
void srand(unsigned int seed);
/* fill a buffer with pseudo-random data */
void get_random_bytes(void *buf, int len);
int get_crypto_bytes(void *buf, int len);
static inline u32 random32(void)
{
u32 ret;
get_random_bytes(&ret, 4);
return ret;
}
static inline u32 prandom_u32_max(u32 ep_ro)
{
return (u32)(((u64) random32() * ep_ro) >> 32);
}
#endif /* __STDLIB_H */
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