From 04d4d0133936a97930deffa859d2a20b7789dd28 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Thu, 22 Apr 1999 18:46:27 +0000
Subject: [PATCH] MAT3mat.c:  Borland tweaks. mat3.h:  Some inline assembly
 from Norman.

---
 Lib/Math/MAT3mat.c |  6 +++++-
 Lib/Math/mat3.h    | 26 ++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/Lib/Math/MAT3mat.c b/Lib/Math/MAT3mat.c
index 4355f1769..2054f7731 100644
--- a/Lib/Math/MAT3mat.c
+++ b/Lib/Math/MAT3mat.c
@@ -12,7 +12,11 @@
 
 #ifdef WIN32
 #  ifndef HAVE_STL_SGI_PORT
-#    include <memory.h>      /* required for memset() and memcpy() */
+#    ifdef __BORLANDC__
+#      include <mem.h>
+#    else
+#      include <memory.h>      /* required for memset() and memcpy() */
+#    endif
 #  endif
 #endif
 
diff --git a/Lib/Math/mat3.h b/Lib/Math/mat3.h
index e11896ce1..cb8a0d33b 100644
--- a/Lib/Math/mat3.h
+++ b/Lib/Math/mat3.h
@@ -47,6 +47,32 @@ typedef double MAT3hvec[4];             /* Vector with homogeneous coord */
 
 extern MAT3mat identityMatrix;
 
+#if defined(i386)
+#define USE_X86_ASM
+#endif
+
+#if defined(USE_X86_ASM)
+static __inline__ int FloatToInt(float f)
+{
+   int r;
+   __asm__ ("fistpl %0" : "=m" (r) : "t" (f) : "st");
+   return r;
+}
+#elif  defined(__MSC__) && defined(__WIN32__)
+static __inline int FloatToInt(float f)
+{
+   int r;
+   _asm {
+     fld f
+     fistp r
+    }
+   return r;
+}
+#else
+#define FloatToInt(F) ((int) (F))
+#endif
+
+
 /* Tests if a number is within EPSILON of zero */
 #define MAT3_IS_ZERO(N) 	((N) < MAT3_EPSILON && (N) > -MAT3_EPSILON)