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/**
* @file BLI_rand.h
*
* Random number functions.
* $Id$
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#ifndef BLI_RAND_H
#define BLI_RAND_H
/** Seed the random number generator */
void BLI_srand (unsigned int seed);
/** Return a pseudo-random number N where 0<=N<(2^31) */
int BLI_rand (void);
/** Return a pseudo-random number N where 0.0<=N<1.0 */
double BLI_drand (void);
/** Return a pseudo-random number N where 0.0f<=N<1.0f */
float BLI_frand (void);
/** Fills a block of memory starting at @a addr
* and extending @a len bytes with pseudo-random
* contents. This routine does not use nor modify
* the state of the BLI random number generator.
*/
void BLI_fillrand (void *addr, int len);
/** Stores the BLI randum number generator state
* into the buffer in @a loc_r.
*/
void BLI_storerand (unsigned int loc_r[2]);
/** Retores the BLI randum number generator state
* from the buffer in @a loc.
*/
void BLI_restorerand (unsigned int loc[2]);
#endif
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