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