Avoid using M_PI

1 files changed, 6 insertions, 10 deletions

diff --git a/common/math_defs.h b/common/math_defs.h
index 0362a956..d90eaae5 100644
--- a/common/math_defs.h
+++ b/common/math_defs.h
@@ -3,12 +3,8 @@
 
 #include <math.h>
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
-constexpr inline float Deg2Rad(float x) noexcept { return x * static_cast<float>(M_PI/180.0); }
-constexpr inline float Rad2Deg(float x) noexcept { return x * static_cast<float>(180.0/M_PI); }
+constexpr inline float Deg2Rad(float x) noexcept { return x * 1.74532925199432955e-02f/*pi/180*/; }
+constexpr inline float Rad2Deg(float x) noexcept { return x * 5.72957795130823229e+01f/*180/pi*/; }
 
 namespace al {
 
@@ -17,14 +13,14 @@ struct MathDefs { };
 
 template<>
 struct MathDefs<float> {
-    static constexpr inline float Pi() noexcept { return static_cast<float>(M_PI); }
-    static constexpr inline float Tau() noexcept { return static_cast<float>(M_PI * 2.0); }
+    static constexpr inline float Pi() noexcept { return 3.14159265358979323846e+00f; }
+    static constexpr inline float Tau() noexcept { return 6.28318530717958647692e+00f; }
 };
 
 template<>
 struct MathDefs<double> {
-    static constexpr inline double Pi() noexcept { return M_PI; }
-    static constexpr inline double Tau() noexcept { return M_PI * 2.0; }
+    static constexpr inline double Pi() noexcept { return 3.14159265358979323846e+00; }
+    static constexpr inline double Tau() noexcept { return 6.28318530717958647692e+00; }
 };
 
 } // namespace al