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srand.c
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srand.c
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/*++
toro C Library
https://github.com/KilianKegel/toro-C-Library#toro-c-library-formerly-known-as-torito-c-library
Copyright (c) 2017-2024, Kilian Kegel. All rights reserved.
SPDX-License-Identifier: GNU General Public License v3.0
Module Name:
srand.c
Abstract:
Implementation of the Standard C function.
Sets the starting seed value for the pseudorandom number generator used by the rand function.
Author:
Kilian Kegel
--*/
#include <CdeServices.h>
/**
Synopsis
#include <stdlib.h>
void srand(unsigned int seed);
Description
https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/srand?view=msvc-160&viewFallbackFrom=vs-2019
The srand function uses the argument as a seed for a new sequence of pseudo-random
numbers to be returned by subsequent calls to rand. If srand is then called with the
same seed value, the sequence of pseudo-random numbers shall be repeated. If rand is
called before any calls to srand have been made, the same sequence shall be generated
as when srand is first called with a seed value of 1.
The implementation shall behave as if no library function calls the srand function.
Returns
The srand function returns no value.
@param[in] seed
@retval void
**/
void srand(unsigned dwSeed) {
CDE_APP_IF* pCdeAppIf = __cdeGetAppIf();
unsigned* pnext = (unsigned*)&pCdeAppIf->nNextRandStaticInternal;
*pnext = dwSeed;
}