Update OpenAL Soft to 1.18.2

libs/openal-soft/common/math_defs.h

@@ -0,0 +1,35 @@
+#ifndef AL_MATH_DEFS_H
+#define AL_MATH_DEFS_H
+
+#include <math.h>
+#ifdef HAVE_FLOAT_H
+#include <float.h>
+#endif
+
+#define F_PI    (3.14159265358979323846f)
+#define F_PI_2  (1.57079632679489661923f)
+#define F_TAU   (6.28318530717958647692f)
+
+#ifndef FLT_EPSILON
+#define FLT_EPSILON (1.19209290e-07f)
+#endif
+
+#ifndef HUGE_VALF
+static const union msvc_inf_hack {
+    unsigned char b[4];
+    float f;
+} msvc_inf_union = {{ 0x00, 0x00, 0x80, 0x7F }};
+#define HUGE_VALF (msvc_inf_union.f)
+#endif
+
+#ifndef HAVE_LOG2F
+static inline float log2f(float f)
+{
+    return logf(f) / logf(2.0f);
+}
+#endif
+
+#define DEG2RAD(x)  ((float)(x) * (F_PI/180.0f))
+#define RAD2DEG(x)  ((float)(x) * (180.0f/F_PI))
+
+#endif /* AL_MATH_DEFS_H */