1 files changed, 43 insertions, 0 deletions
diff --git a/devel/allegro/files/extra-patch-include-allegro-inline-fmaths.in b/devel/allegro/files/extra-patch-include-allegro-inline-fmaths.in
new file mode 100644
index 000000000000..657cff75a39f
--- /dev/null
+++ b/devel/allegro/files/extra-patch-include-allegro-inline-fmaths.in
@@ -0,0 +1,43 @@
+--- include/allegro/inline/fmaths.inl.orig	Sun Jun  5 18:23:46 2005
++++ include/allegro/inline/fmaths.inl	Thu Aug 11 18:53:53 2005
+@@ -103,40 +103,11 @@
+ 
+ AL_INLINE(fixed, fixmul, (fixed x, fixed y),
+ {
+-   /* In benchmarks conducted circa May 2005 we found that, in the main:
+-    * - IA32 machines performed faster with one implementation;
+-    * - AMD64 and G4 machines performed faster with another implementation.
+-    *
+-    * Benchmarks were mainly done with differing versions of gcc.
+-    * Results varied with other compilers, optimisation levels, etc.
+-    * so this is not optimal, though a tenable compromise.
+-    */
+-   #if (defined ALLEGRO_I386) || (!defined LONG_LONG)
+-
+-      fixed sign = (x^y) & 0x80000000;
+-      int mask_x = x >> 31;
+-      int mask_y = y >> 31;
+-      int mask_result = sign >> 31;
+-      fixed result;
+-
+-      x = (x^mask_x) - mask_x;
+-      y = (y^mask_y) - mask_y;
+-
+-      result = ((y >> 8)*(x >> 8) +
+-		(((y >> 8)*(x&0xff)) >> 8) +
+-		(((x >> 8)*(y&0xff)) >> 8));
+-
+-      return (result^mask_result) - mask_result;
+-
+-   #else
+-
+       LONG_LONG lx = x;
+       LONG_LONG ly = y;
+       LONG_LONG lres = (lx*ly)>>16;
+       int res = lres;
+       return res;
+-
+-   #endif
+ })
+ 
+