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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1995 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Computer Systems
* Engineering Group at Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#) $Header: /cvsroot/nsnam/ns-2/tools/random.h,v 1.16 1999/10/09 01:06:39 haoboy Exp $ (LBL)
*/
#ifndef ns_random_h
#define ns_random_h
#include <math.h>
#include "config.h"
#include "rng.h"
class Random {
private:
static RNG *rng() { return RNG::defaultrng(); }
public:
static void seed(int s) { rng()->set_seed(RNG::RAW_SEED_SOURCE, s); }
static int seed_heuristically() { rng()->set_seed(RNG::HEURISTIC_SEED_SOURCE); return rng()->seed(); };
static int random() { return rng()->uniform_positive_int(); }
static double uniform() { return rng()->uniform_double();}
static double uniform(double r) { return rng()->uniform(r); }
static double uniform(double a, double b) { return rng()->uniform(a,b); }
static double exponential() { return rng()->exponential(); }
static int integer(int k) { return rng()->uniform(k); }
static double exponential(double r) { return rng()->exponential(r); }
static double pareto(double scale, double shape) { return rng()->pareto(scale, shape); }
static double paretoII(double scale, double shape) { return rng()->paretoII(scale, shape);}
static double normal(double avg, double std) { return rng()->normal(avg, std); }
static double lognormal(double avg, double std) { return rng()->lognormal(avg, std); }
};
#endif
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