| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * (C) Copyright 2000-2009 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| */ |
| |
| #ifndef __RAND_H |
| #define __RAND_H |
| |
| #define RAND_MAX -1U |
| |
| /** |
| * srand() - Set the random-number seed value |
| * |
| * This can be used to restart the pseudo-random-number sequence from a known |
| * point. This affects future calls to rand() to start from that point |
| * |
| * @seed: New seed |
| */ |
| void srand(unsigned int seed); |
| |
| /** |
| * rand() - Get a 32-bit pseudo-random number |
| * |
| * Return: next random number in the sequence |
| */ |
| unsigned int rand(void); |
| |
| /** |
| * rand_r() - Get a 32-bit pseudo-random number |
| * |
| * This version of the function allows multiple sequences to be used at the |
| * same time, since it requires the caller to store the seed value. |
| * |
| * @seedp: seed value to use, updated on exit |
| * Return: next random number in the sequence |
| */ |
| unsigned int rand_r(unsigned int *seedp); |
| |
| #endif |