65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/**
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* \file sg_random.h
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* Routines to handle random number generation and hide platform differences.
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*/
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// Written by Curtis Olson, started July 1997.
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//
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// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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//
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// $Id$
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#ifndef _SG_RANDOM_H
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#define _SG_RANDOM_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Seed the random number generater with time() so we don't see the
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* same sequence every time.
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*/
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void sg_srandom_time();
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/**
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* Seed the random number generater with your own seed so can set up
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* repeatable randomization.
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* @param seed random number generator seed
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*/
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void sg_srandom( unsigned int seed );
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/**
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* Return a random number between [0.0, 1.0)
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* @return next "random" number in the "random" sequence
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*/
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double sg_random();
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#ifdef __cplusplus
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}
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#endif
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#endif // _SG_RANDOM_H
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