Add the Fast trig functions that work with EQ headings

This should match pretty close to the clients LUTs

Also fixed a bug with push

zone/fastmath.h

@@ -0,0 +1,18 @@
+#ifndef FASTMATH_H
+#define FASTMATH_H
+
+class FastMath
+{
+private:
+	float lut_cos[512];
+	float lut_sin[512];
+
+public:
+	FastMath();
+
+	inline float FastSin(float a) { return lut_sin[static_cast<int>(a) & 0x1ff]; }
+	inline float FastCos(float a) { return lut_cos[static_cast<int>(a) & 0x1ff]; }
+
+};
+
+#endif /* !FASTMATH_H */