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Torque/SDK/lib/maxsdk31/gfloat.h

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+/**********************************************************************
+ *<
+	FILE: gfloat
+
+	DESCRIPTION: Single Precision Floating Point Routines
+
+	CREATED BY: Don Brittain & Dan Silva
+
+	HISTORY:
+
+ *>	Copyright (c) 1994, All Rights Reserved.
+ **********************************************************************/
+
+#ifndef _GFLOAT_H 
+
+#define _GFLOAT_H
+
+
+//-------------------------------------------------------------------------------
+// Single precision floating point stuff...
+//
+inline void SinCos (float angle, float *sine, float *cosine) 
+{
+#ifdef _M_IX86	// if on Intel, use assembly language
+	__asm {
+		push		ecx
+        fld         dword ptr angle
+        fsincos
+		mov 		ecx, dword ptr[cosine]
+        fstp        dword ptr [ecx]
+		mov 		ecx, dword ptr[sine]
+        fstp        dword ptr [ecx]
+		pop			ecx
+    }
+#else
+    *sine   = (float)sin (angle);
+    *cosine = (float)cos (angle);
+#endif
+}
+
+inline float Sin(float angle)
+{
+#ifdef _M_IX86
+	float s, c;
+	SinCos(angle, &s, &c);
+	return s;
+#else
+	return (float)sin((double)angle);
+#endif
+}
+
+inline float Cos(float angle)
+{
+#ifdef _M_IX86
+	float s, c;
+	SinCos(angle, &s, &c);
+	return c;
+#else
+	return (float)cos((double)angle);
+#endif
+}
+
+inline float Sqrt(float arg)
+{
+#ifdef _M_IX86
+	float ans;
+    __asm {
+        fld         dword ptr arg
+        fsqrt
+        fstp        dword ptr [ans]
+    	}
+	return ans;
+#else
+	return (float)sqrt((double)arg);
+#endif
+}
+
+
+#endif