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44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
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// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef SIMULATION_RANDOM_H
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#define SIMULATION_RANDOM_H
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// returns a number drawn from the exponential distribution with the given mean
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float exponential( float mean = 1.0f );
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// returns a number drawn from a gaussian distribution with the
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// specified mean and standard deviation
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float gaussian( float mean, float stdev );
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// This is a simple but pretty good random number generator.
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float myRand();
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// set the seed (optional)
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void myRandSeed(long s);
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// Park and Miller's "Minimal Standard" generator using Schrage's
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// method to do the computation in 32 bit arithmetic without overflow.
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long pmRand();
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// Bayes-Durham shuffle
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long pmRandShuffle();
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// set the seed (optional)
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void pmRandSeed(long s);
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#endif // SIMULATION_RANDOM_H
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