# HG changeset patch
# User Chris Cannam <c.cannam@qmul.ac.uk>
# Date 1441623674 -3600
# Node ID 433e3aac9e528ba24134279762aa290ecab62281
# Parent  2420733abeb664f3f68ce0f91490a107920797ec
Add pi.h. Let's stop messing around with platform-specific defines

diff -r 2420733abeb6 -r 433e3aac9e52 src/dsp/KaiserWindow.h
--- a/src/dsp/KaiserWindow.h	Fri Jul 17 15:49:42 2015 +0100
+++ b/src/dsp/KaiserWindow.h	Mon Sep 07 12:01:14 2015 +0100
@@ -35,6 +35,8 @@
 #include <vector>
 #include <cmath>
 
+#include "pi.h"
+
 /**
  * Kaiser window: A windower whose bandwidth and sidelobe height
  * (signal-noise ratio) can be specified. These parameters are traded
diff -r 2420733abeb6 -r 433e3aac9e52 src/dsp/MathUtilities.h
--- a/src/dsp/MathUtilities.h	Fri Jul 17 15:49:42 2015 +0100
+++ b/src/dsp/MathUtilities.h	Mon Sep 07 12:01:14 2015 +0100
@@ -35,6 +35,7 @@
 #include <vector>
 
 #include "nan-inf.h"
+#include "pi.h"
 
 /**
  * Static helper functions for simple mathematical calculations.
diff -r 2420733abeb6 -r 433e3aac9e52 src/dsp/SincWindow.h
--- a/src/dsp/SincWindow.h	Fri Jul 17 15:49:42 2015 +0100
+++ b/src/dsp/SincWindow.h	Mon Sep 07 12:01:14 2015 +0100
@@ -34,6 +34,8 @@
 
 #include <vector>
 
+#include "pi.h"
+
 /**
  * A window containing values of the sinc function, i.e. sin(x)/x with
  * sinc(0) == 1, with x == 0 at the centre.
diff -r 2420733abeb6 -r 433e3aac9e52 src/dsp/Window.h
--- a/src/dsp/Window.h	Fri Jul 17 15:49:42 2015 +0100
+++ b/src/dsp/Window.h	Mon Sep 07 12:01:14 2015 +0100
@@ -29,14 +29,16 @@
     authorization.
 */
 
-#ifndef _WINDOW_H_
-#define _WINDOW_H_
+#ifndef WINDOW_H
+#define WINDOW_H
 
 #include <cmath>
 #include <iostream>
 #include <map>
 #include <vector>
 
+#include "pi.h"
+
 enum WindowType {
     RectangularWindow,
     BartlettWindow,
diff -r 2420733abeb6 -r 433e3aac9e52 src/dsp/pi.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/dsp/pi.h	Mon Sep 07 12:01:14 2015 +0100
@@ -0,0 +1,11 @@
+
+#ifndef PI_H
+#define PI_H
+
+#include <cmath>
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#endif