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diff dsp/tonal/ChangeDetectionFunction.cpp @ 488:7992d0923626

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Use M_PI
author Chris Cannam <cannam@all-day-breakfast.com>
date Fri, 31 May 2019 16:48:29 +0100
parents cbe668c7d724
children
line wrap: on
line diff
--- a/dsp/tonal/ChangeDetectionFunction.cpp	Fri May 31 16:33:55 2019 +0100
+++ b/dsp/tonal/ChangeDetectionFunction.cpp	Fri May 31 16:48:29 2019 +0100
@@ -15,10 +15,6 @@
 
 #include "ChangeDetectionFunction.h"
 
-#ifndef PI
-#define PI (3.14159265358979232846)
-#endif
-
 ChangeDetectionFunction::ChangeDetectionFunction(ChangeDFConfig config) :
     m_dFilterSigma(0.0), m_iFilterWidth(0)
 {
@@ -38,7 +34,7 @@
     m_dFilterSigma = double(m_iFilterWidth) / double(2*2.3548);
     m_vaGaussian.resize(m_iFilterWidth);
         
-    double dScale = 1.0 / (m_dFilterSigma*sqrt(2*PI));
+    double dScale = 1.0 / (m_dFilterSigma*sqrt(2*M_PI));
         
     for (int x = -(m_iFilterWidth-1)/2; x <= (m_iFilterWidth-1)/2; x++) {
         double w = dScale * std::exp ( -(x*x)/(2*m_dFilterSigma*m_dFilterSigma) );