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