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path: root/drivers/vorbis/tone.c
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Diffstat (limited to 'drivers/vorbis/tone.c')
-rw-r--r--drivers/vorbis/tone.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/vorbis/tone.c b/drivers/vorbis/tone.c
index 5f1f43cf7b..73afc67d4c 100644
--- a/drivers/vorbis/tone.c
+++ b/drivers/vorbis/tone.c
@@ -3,10 +3,6 @@
#include <math.h>
#include <string.h>
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
void usage(){
fprintf(stderr,"tone <frequency_Hz>,[<amplitude>] [<frequency_Hz>,[<amplitude>]...]\n");
exit(1);