/usr/include/dolfin/math/basic.h is in libdolfin-dev 1.4.0+dfsg-4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | // Copyright (C) 2003-2011 Anders Logg
//
// This file is part of DOLFIN.
//
// DOLFIN is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// First added: 2003-02-06
// Last changed: 2011-07-01
#ifndef __BASIC_H
#define __BASIC_H
#include <cstddef>
#include <utility>
#include <dolfin/common/constants.h>
namespace dolfin
{
/// Return a to the power n
std::size_t ipow(std::size_t a, std::size_t n);
/// Return a random number, uniformly distributed between [0.0, 1.0)
double rand();
/// Seed random number generator
void seed(std::size_t s);
/// Check whether x is close to x0 (to within DOLFIN_EPS)
bool near(double x, double x0, double eps=DOLFIN_EPS);
// FIXME: This should not involve eps. It is 'between' and
// not 'nearly between'.
/// Check whether x is between x0 and x1 (inclusive, to within DOLFIN_EPS)
bool between(double x, std::pair<double, double> range);
}
#endif
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