libpsynth 0.2.1
/home/raskolnikov/dev/psynth/trunk/src/psynth/base/misc.hpp
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00001 
00012 /*
00013  *  Copyright (C) 2007, 2009 Juan Pedro BolĂ­var Puente
00014  *
00015  *  This file is part of Psychosynth.
00016  *   
00017  *  Psychosynth is free software: you can redistribute it and/or modify
00018  *  it under the terms of the GNU General Public License as published by
00019  *  the Free Software Foundation, either version 3 of the License, or
00020  *  (at your option) any later version.
00021  *
00022  *  Psychosynth is distributed in the hope that it will be useful,
00023  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00024  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00025  *  GNU General Public License for more details.
00026  *
00027  *  You should have received a copy of the GNU General Public License
00028  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
00029  *
00030  */
00031 
00032 #ifndef PSYNTH_MISC_H
00033 #define PSYNTH_MISC_H
00034 
00035 #include <string>
00036 
00037 namespace psynth
00038 {
00039 namespace base
00040 {
00041 
00042 template <class T>
00043 inline T clamp (T x, T min, T max)
00044 {
00045     return std::min (max, std::max (min, x));
00046 }
00047 
00051 template <typename T>
00052 inline T sign (T x)
00053 {
00054     return x > 0 ? +1 : (x < 0 ? -1 : 0);
00055 }
00056 
00061 template <class T>
00062 inline T phase (T x)
00063 {
00064     return x - (x >= 0 ?
00065                 static_cast<int>(x) :
00066                 static_cast<int>(x) - 1);
00067 }
00068 
00075 template <class T>
00076 inline T linear_interp (T val, T next, T delta)
00077 {
00078     return val + delta * (next - val); 
00079 }
00080 
00089 char* itoa (int val, int base);
00090 
00099 char* ftoa (double f, double sigfigs);
00100 
00106 int strcmp_i (const char* a, const char* b);
00107 
00113 std::string dirname_str (std::string str);
00114 
00120 const char* get_extension (const char* file);
00121 
00122 } /* namespace base */
00123 } /* namespace psynth */
00124 
00125 #endif /* PSYNTH_MISC_H */