mirror of
https://github.com/curl/curl.git
synced 2024-11-21 01:16:58 +08:00
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* 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.
|
|
*
|
|
* $Id$
|
|
***************************************************************************/
|
|
|
|
#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();
|
|
}
|
|
|