numerics.h

Go to the documentation of this file.

/*
 *  numerics.h
 *
 *  This file is part of NEST.
 *
 *  Copyright (C) 2004 The NEST Initiative
 *
 *  NEST 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.
 *
 *  NEST 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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with NEST.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef NUMERICS_H
#define NUMERICS_H
 
// Generated includes:
#include "config.h"
 
// C++ includes:
#include <cassert>
#include <cmath>
#include <cstddef>
#include <limits>
 
namespace numerics
{
 
extern const double e;
extern const double pi;
extern const double nan;
extern const double sqrt_log_two;
 
inline double
expm1( double x )
{
  return std::expm1( x );
}
 
template < typename T >
inline bool
is_nan( T f )
{
  return std::isnan( f );
}
}
 
 
// later also in namespace
long ld_round( double );
 
double dround( double );
 
double dtruncate( double );
 
bool is_integer( double );
 
long mod_inverse( long a, long m );
 
size_t first_index( long period, long phase0, long step, long phase );
 
#endif