Put M_PI inside retro_miscellaneous.h

audio/audio_filters/chorus.c

@@ -18,9 +18,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#ifndef M_PI
-#define M_PI 3.1415926535897932384626433832795
-#endif
+#include <retro_miscellaneous.h>
 
 #define CHORUS_MAX_DELAY 4096
 #define CHORUS_DELAY_MASK (CHORUS_MAX_DELAY - 1)

audio/audio_filters/fft/fft.c

@@ -17,9 +17,7 @@
 #include <math.h>
 #include <stdlib.h>
 
-#ifndef M_PI
-#define M_PI 3.1415926535897932384626433832795
-#endif
+#include <retro_miscellaneous.h>
 
 struct fft
 {

audio/audio_filters/iir.c

@@ -19,9 +19,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-#ifndef M_PI
-#define M_PI		3.1415926535897932384626433832795
-#endif
+#include <retro_miscellaneous.h>
+
 #define sqr(a) ((a) * (a))
 
 /* filter types */

audio/audio_filters/phaser.c

@@ -19,13 +19,11 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <retro_miscellaneous.h>
+
 #define phaserlfoshape 4.0
 #define phaserlfoskipsamples 20
 
-#ifndef M_PI
-#define M_PI		3.1415926535897932384626433832795
-#endif
-
 struct phaser_data
 {
    float freq;

audio/audio_filters/wahwah.c

@@ -19,11 +19,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define WAHWAH_LFO_SKIP_SAMPLES 30
+#include <retro_miscellaneous.h>
 
-#ifndef M_PI
-#define M_PI		3.1415926535897932384626433832795
-#endif
+#define WAHWAH_LFO_SKIP_SAMPLES 30
 
 struct wahwah_data
 {

audio/audio_resampler_driver.h

@@ -27,9 +27,7 @@ extern "C" {
 #include <math.h>
 #include <boolean.h>
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846264338327
-#endif
+#include <retro_miscellaneous.h>
 
 #define RESAMPLER_SIMD_SSE      (1 << 0)
 #define RESAMPLER_SIMD_SSE2     (1 << 1)

cores/libretro-test/libretro-test.c

@@ -5,11 +5,9 @@
 #include <string.h>
 #include <math.h>
 
-#include "../../libretro.h"
+#include <retro_miscellaneous.h>
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
+#include "../../libretro.h"
 
 static uint16_t *frame_buf;
 static struct retro_log_callback logging;

gfx/d3d/render_chain_cg.cpp

@@ -25,6 +25,7 @@
 #include <Cg/cgD3D9.h>
 
 #include <retro_inline.h>
+#include <retro_miscellaneous.h>
 #include <compat/strl.h>
 
 #include "render_chain_driver.h"

gfx/drivers/gl.c

@@ -25,13 +25,14 @@
 #include <string.h>
 
 #include <compat/strl.h>
-
-#include "../../driver.h"
-#include "../../performance.h"
 #include <gfx/scaler/scaler.h>
 #include <gfx/math/matrix_4x4.h>
 #include <formats/image.h>
 #include <retro_inline.h>
+#include <retro_miscellaneous.h>
+
+#include "../../driver.h"
+#include "../../performance.h"
 
 #include "../../libretro.h"
 #include "../../general.h"

input/drivers/gx_input.c

@@ -21,10 +21,7 @@
 #include <math.h>
 
 #include <boolean.h>
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846264338327
-#endif
+#include <retro_miscellaneous.h>
 
 #include "../../driver.h"
 #include "../../libretro.h"

libretro-common/gfx/scaler/scaler_filter.c

@@ -30,10 +30,6 @@
 #include <retro_inline.h>
 #include <filters.h>
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
 static bool allocate_filters(struct scaler_ctx *ctx)
 {
    ctx->horiz.filter     = (int16_t*)scaler_alloc(sizeof(int16_t), ctx->horiz.filter_stride * ctx->out_width);

libretro-common/include/retro_miscellaneous.h

@@ -59,6 +59,10 @@
 #define PATH_MAX_LENGTH 4096
 #endif
 
+#ifndef M_PI
+#define M_PI 3.14159265358979323846264338327
+#endif
+
 #ifndef max
 #define max(a, b) ((a) > (b) ? (a) : (b))
 #endif