1 files changed, 26 insertions, 0 deletions
diff --git a/src/post/goom/mathtools.h b/src/post/goom/mathtools.h
new file mode 100755
index 000000000..7ed0f80ef
--- /dev/null
+++ b/src/post/goom/mathtools.h
@@ -0,0 +1,26 @@
+#define _double2fixmagic (68719476736.0*1.5)
+//2^36 * 1.5,  (52-_shiftamt=36) uses limited precisicion to floor
+#define _shiftamt 16
+//16.16 fixed point representation,
+
+#if BigEndian_
+#define iexp_				0
+#define iman_				1
+#else
+#define iexp_				1
+#define iman_				0
+#endif //BigEndian_
+
+#ifdef HAVE_MMX
+#define F2I(dbl,i) \
+{double d = dbl + _double2fixmagic; i = ((int*)&d)[iman_] >> _shiftamt; }
+#else
+#define F2I(dbl,i) i=(int)dbl;
+#endif
+
+#if 0
+#define SINCOS(f,s,c) \
+  __asm__ __volatile__ ("fsincos" : "=t" (c), "=u" (s) : "0" (f))
+#else
+#define SINCOS(f,s,c) {s=sin(f);c=cos(f);}
+#endif