random.h

数值计算工具库,C语言编写的,可以直接调用.

/***************************************************************************
 * blitz/random.h       Random number generator wrapper class
 *
 * $Id: random.h,v 1.4 1998/03/14 00:04:47 tveldhui Exp $
 *
 * Copyright (C) 1997,1998 Todd Veldhuizen <[e-mail]>
 *
 * 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.
 *
 * 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.
 *
 * Suggestions:          [e-mail]
 * Bugs:                 [e-mail]
 *
 * For more information, please see the Blitz++ Home Page:
 *    http://seurat.uwaterloo.ca/blitz/
 *
 ***************************************************************************
 * $Log: random.h,v $
 * Revision 1.4  1998/03/14 00:04:47  tveldhui
 * 0.2-alpha-05
 *
 * Revision 1.3  1997/07/16 14:51:20  tveldhui
 * Update: Alpha release 0.2 (Arrays)
 *
 * Revision 1.2  1997/01/24 14:42:00  tveldhui
 * Periodic RCS update
 *
 */

#ifndef BZ_RANDOM_H
#define BZ_RANDOM_H

#ifndef BZ_BLITZ_H
 #include <blitz/blitz.h>
#endif

BZ_NAMESPACE(blitz)

template<class P_distribution>
class Random {

public:
    typedef P_distribution T_distribution;
    typedef _bz_typename T_distribution::T_numtype T_numtype;

    Random(double parm1=0.0, double parm2=1.0, double parm3=0.0)
        : generator_(parm1, parm2, parm3)
    { }

    void randomize()
    { generator_.randomize(); }
   
    T_numtype random()
    { return generator_.random(); }

    operator T_numtype()
    { return generator_.random(); }

protected: 
    T_distribution generator_;
};

BZ_NAMESPACE_END

#include <blitz/randref.h>

#endif // BZ_RANDOM_H