diff maths/MathUtilities.h @ 241:a98dd8ec96f8

* Move dsp/maths to maths ; bring PCA and HMM across from Soundbite

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/maths/MathUtilities.h	Wed Jan 09 10:31:29 2008 +0000
@@ -0,0 +1,33 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    QM DSP Library
+
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2005-2006 Christian Landone.
+    All rights reserved.
+*/
+
+#ifndef MATHUTILITIES_H
+#define MATHUTILITIES_H
+
+#include <vector>
+
+class MathUtilities  
+{
+public:	
+    static double round( double x );
+    static void	  getFrameMinMax( const double* data, unsigned int len,  double* min, double* max );
+    static double mean( const double* src, unsigned int len );
+    static double sum( const double* src, unsigned int len );
+    static double princarg( double ang );
+    static double median( const double* src, unsigned int len );
+    static double mod( double x, double y);
+    static void	  getAlphaNorm(const double *data, unsigned int len, unsigned int alpha, double* ANorm);
+    static double getAlphaNorm(const std::vector <double> &data, unsigned int alpha );
+    static void   circShift( double* data, int length, int shift);
+    static int	  getMax( double* data, unsigned int length, double* max );
+    static int    compareInt(const void * a, const void * b);
+};
+
+#endif