57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rubber Band Library
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An audio time-stretching and pitch-shifting library.
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Copyright 2007-2022 Particular Programs Ltd.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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Alternatively, if you have a valid commercial licence for the
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Rubber Band Library obtained by agreement with the copyright
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holders, you may redistribute and/or modify it under the terms
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described in that licence.
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If you wish to distribute code using the Rubber Band Library
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under terms other than those of the GNU General Public License,
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you must obtain a valid commercial licence before doing so.
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*/
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#ifndef RUBBERBAND_MATHMISC_H
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#define RUBBERBAND_MATHMISC_H
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif // M_PI
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namespace RubberBand {
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inline double mod(double x, double y) {
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return x - (y * floor(x / y));
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}
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inline float modf(float x, float y) {
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return x - (y * float(floor(x / y)));
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}
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inline double princarg(double a) {
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return mod(a + M_PI, -2.0 * M_PI) + M_PI;
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}
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inline float princargf(float a) {
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return modf(a + (float)M_PI, -2.f * (float)M_PI) + (float)M_PI;
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}
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inline int binForFrequency(double f, int fftSize, double sampleRate) {
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return int(round(f * double(fftSize) / sampleRate));
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}
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inline double frequencyForBin(int b, int fftSize, double sampleRate) {
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return (double(b) * sampleRate) / double(fftSize);
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}
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}
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#endif
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