Use constants from math_funcs rather than unstandardized C++ constants.

1 files changed, 4 insertions, 3 deletions

diff --git a/servers/audio/effects/audio_effect_phaser.cpp b/servers/audio/effects/audio_effect_phaser.cpp
index b687e9f708..bfce608603 100644
--- a/servers/audio/effects/audio_effect_phaser.cpp
+++ b/servers/audio/effects/audio_effect_phaser.cpp
@@ -1,5 +1,6 @@
 #include "audio_effect_phaser.h"
 #include "servers/audio_server.h"
+#include "math_funcs.h"
 
 void AudioEffectPhaserInstance::process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
 
@@ -8,14 +9,14 @@ void AudioEffectPhaserInstance::process(const AudioFrame *p_src_frames,AudioFram
 	float dmin = base->range_min / (sampling_rate/2.0);
 	float dmax = base->range_max / (sampling_rate/2.0);
 
-	float increment = 2.f * M_PI * (base->rate / sampling_rate);
+	float increment = 2.f * Math_PI * (base->rate / sampling_rate);
 
 	for(int i=0;i<p_frame_count;i++) {
 
 		phase += increment;
 
-		while ( phase >= M_PI * 2.f ) {
-			phase -= M_PI * 2.f;
+		while ( phase >= Math_PI * 2.f ) {
+			phase -= Math_PI * 2.f;
 		}
 
 		float d  = dmin + (dmax-dmin) * ((sin( phase ) + 1.f)/2.f);