DenseLinAlgPack_random_vector.cpp

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// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
//                  Copyright (2003) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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#include <stdlib.h>

#include <stdexcept>

#include "DenseLinAlgPack_random_vector.hpp"
#include "DenseLinAlgPack_DVectorClass.hpp"

void DenseLinAlgPack::seed_random_vector_generator( unsigned int s )
{
  srand(s);
}

void DenseLinAlgPack::random_vector( value_type l, value_type u, DVectorSlice* v )
{
  if(!v)
    throw std::invalid_argument( "random_vector(...) : Error, "
      "v can not be NULL" );
  if( l > u )
    throw std::invalid_argument( "random_vector(...) : Error, "
      "l can not be greater than u" );
  for( DVectorSlice::iterator itr = v->begin(); itr != v->end(); )
    *itr++ = l + (double(rand())/RAND_MAX) * (u -l);
}