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-rw-r--r--OpenAL32/Include/alu.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h
index 7c6e95b7..9bbcc464 100644
--- a/OpenAL32/Include/alu.h
+++ b/OpenAL32/Include/alu.h
@@ -4,6 +4,47 @@
#include "AL/al.h"
#include "AL/alc.h"
+#ifdef HAVE_FLOAT_H
+#include <float.h>
+#endif
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846 /* pi */
+#define M_PI_2 1.57079632679489661923 /* pi/2 */
+#endif
+
+#ifdef HAVE_SQRTF
+#define aluSqrt(x) ((ALfloat)sqrtf((float)(x)))
+#else
+#define aluSqrt(x) ((ALfloat)sqrt((double)(x)))
+#endif
+
+#ifdef HAVE_ACOSF
+#define aluAcos(x) ((ALfloat)acosf((float)(x)))
+#else
+#define aluAcos(x) ((ALfloat)acos((double)(x)))
+#endif
+
+#ifdef HAVE_ATANF
+#define aluAtan(x) ((ALfloat)atanf((float)(x)))
+#else
+#define aluAtan(x) ((ALfloat)atan((double)(x)))
+#endif
+
+#ifdef HAVE_FABSF
+#define aluFabs(x) ((ALfloat)fabsf((float)(x)))
+#else
+#define aluFabs(x) ((ALfloat)fabs((double)(x)))
+#endif
+
+// fixes for mingw32.
+#if defined(max) && !defined(__max)
+#define __max max
+#endif
+#if defined(min) && !defined(__min)
+#define __min min
+#endif
+
#ifdef __cplusplus
extern "C" {
#endif