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