/[svn]/linuxsampler/trunk/src/common/RTMath.h
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revision 828 by wylder, Thu Dec 22 19:35:42 2005 UTC revision 829 by schoenebeck, Sat Jan 14 14:07:47 2006 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 75  class RTMathBase { Line 75  class RTMathBase {
75              return pCentsToFreqTable[index_int] + index_fract * (pCentsToFreqTable[index_int+1] - pCentsToFreqTable[index_int]);              return pCentsToFreqTable[index_int] + index_fract * (pCentsToFreqTable[index_int+1] - pCentsToFreqTable[index_int]);
76          }          }
77    
78            /**
79             * Inverse function to CentsToFreqRatio(). This function is a bit
80             * slow, so it should not be called too frequently.
81             */
82            static double FreqRatioToCents(double FreqRatio) {
83                return log(FreqRatio) / log(TWELVEHUNDREDTH_ROOT_OF_TWO);
84            }
85    
86      private:      private:
87          static float  CentsToFreqTable[CONFIG_MAX_PITCH * 1200 * 2 + 1];          static float  CentsToFreqTable[CONFIG_MAX_PITCH * 1200 * 2 + 1];
88          static float* pCentsToFreqTable;          static float* pCentsToFreqTable;
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