00001 /* 00002 Copyright (c) 2005, Quentin Lequy and Romain Gaucher 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or 00006 without modification, are permitted provided that the following 00007 conditions are met: 00008 00009 * Redistributions of source code must retain the above copyright 00010 notice, this list of conditions and the following disclaimer. 00011 00012 * Redistributions in binary form must reproduce the above copyright 00013 notice, this list of conditions and the following disclaimer in the 00014 documentation and/or other materials provided with the distribution. 00015 00016 * Neither the name of Quentin Lequy or Romain Gaucher nor the names 00017 of its contributors may be used to endorse or promote products 00018 derived from this software without specific prior written permission. 00019 00020 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00021 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00022 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00023 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00024 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00025 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 00026 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00027 AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00028 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00029 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00030 */ 00031 00032 #ifndef __FRACTION_H 00033 #define __FRACTION_H 00034 00035 #include <map> 00036 00037 namespace Modelib { 00038 00043 class FractionConvert 00044 { 00046 struct Fraction 00047 { 00048 unsigned num; 00049 unsigned den; 00050 00052 Fraction(unsigned _num = 0, unsigned _den = 1) 00053 : num(_num), den(_den) 00054 {} 00055 00057 Fraction(const Fraction & f) 00058 : num(f.num), den(f.den) 00059 {} 00060 00062 Fraction & operator= (const Fraction & f) 00063 { 00064 if( &f != this) 00065 { 00066 num = f.num; 00067 den = f.den; 00068 } 00069 return *this; 00070 } 00071 }; 00072 00073 Fraction * frac; 00074 float * reel; 00075 unsigned nfrac; 00076 00077 public: 00079 FractionConvert(unsigned _n = 100); 00081 ~FractionConvert(); 00083 bool Approx(float nb, int & num, unsigned & den) const; 00084 }; 00085 00086 } 00087 00088 #endif 00089