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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "setup.h"
#include <curl/curl.h>
#include "curl_rand.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
/* Private pseudo-random number seed. Unsigned integer >= 32bit. Threads
mutual exclusion is not implemented to acess it since we do not require
high quality random numbers (only used in form boudary generation). */
static unsigned int randseed;
/* Pseudo-random number support. */
unsigned int Curl_rand(void)
{
unsigned int r;
/* Return an unsigned 32-bit pseudo-random number. */
r = randseed = randseed * 1103515245 + 12345;
return (r << 16) | ((r >> 16) & 0xFFFF);
}
void Curl_srand(void)
{
/* Randomize pseudo-random number sequence. */
randseed = (unsigned int) time(NULL);
Curl_rand();
Curl_rand();
Curl_rand();
}
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