/*
* interval.h -- ePiX::interval class and operations
*
* This file is part of ePiX, a C++ library for creating high-quality
* figures in LaTeX
*
* Version 1.0.25
* Last Change: May 20, 2007
*
*
* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
* Andrew D. Hwang
* Department of Mathematics and Computer Science
* College of the Holy Cross
* Worcester, MA, 01610-2395, USA
*
*
* ePiX 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.
*
* ePiX 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 ePiX; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*
* This file provides the interval class:
*
* - Minkowski sum, intersection
*/
#ifndef EPIX_INTERVAL
#define EPIX_INTERVAL
#include
namespace ePiX {
class interval {
public:
interval(std::string); // allow implicit conversion, must mangle argument
interval(double, double); // closed interval
static interval emptyset;
double min() const;
double max() const;
double avg() const;
bool contains(double) const;
// Minkowski sum
interval& operator +=(const interval&);
// intersection
interval& operator *=(const interval&);
bool operator== (const interval&) const;
bool operator!= (const interval&) const;
bool is_empty() const;
private:
double m_rmin, m_rmax;
bool m_closed_l, m_closed_r;
static interval literal(double a, double b); // can force b