LauRandom.cc

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// Copyright University of Warwick 2005 - 2013.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

// Authors:
// Thomas Latham
// John Back
// Paul Harrison

#include "LauRandom.hh"

#include "TRandom3.h"

TRandom* LauRandom::randomFun()
{
        // Returns a pointer to a singleton random-number generator implementation.
        // Creates the object the first time it is called.

        static TRandom* theGenerator = 0;
        if (theGenerator == 0) {theGenerator = new TRandom3(65539);}
        return theGenerator;
}

TRandom* LauRandom::zeroSeedRandom()
{
        // Returns a pointer to a singleton random-number generator implementation.
        // Creates the object the first time it is called.

        static TRandom* theGenerator = 0;
        if (theGenerator == 0) {theGenerator = new TRandom3(0);}
        // Use TRandom3(0) to set seed from machine clock time (within +-1 sec).
        return theGenerator;
}

void LauRandom::setSeed(UInt_t seed)
{
        TRandom* theGenerator = randomFun();
        theGenerator->SetSeed(seed);
}