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/* (C) Copyright 2004, 2005, 2006, 2007, 2008, 2009 Stijn van Dongen
*
* This file is part of tingea. You can redistribute and/or modify tingea
* under the terms of the GNU General Public License; either version 3 of the
* License or (at your option) any later version. You should have received a
* copy of the GPL along with tingea, in the file COPYING.
*/
#ifndef tingea_rand_h
#define tingea_rand_h
#include <stdlib.h>
#define MCX_RAND_MAX RAND_MAX
#define mcxUniform0 ((1.0 * rand()) / ((double) RAND_MAX + 1.0))
#define mcxUniform1 (1.0 - ((1.0 * rand()) / ((double) RAND_MAX + 1.0)))
/* This is for weak seeding, to obtain fresh seeds which will definitely
* *not* be suitable for cryptographic needs
*/
unsigned long mcxSeed
( unsigned long seedlet
) ;
double mcxNormal
( void
) ;
double mcxNormalCut
( double radius
, double stddev
) ;
double mcxNormalZiggurat
( void
) ;
double mcxNormalBoxMuller
( void
) ;
/* Generate numbers in the interval [-outer, outer] according
* to the normal distribution with standard deviation sigma.
* Use e.g. outer = 2.0 sigma = 0.5
*/
double mcxNormalSample
( double radius
, double stddev
) ;
#endif
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