From 55b765064de10fd49f4ea5df29e38e7d8329e570 Mon Sep 17 00:00:00 2001
From: Jorn Baayen <jorn@openedhand.com>
Date: Fri, 25 Aug 2006 10:14:14 +0000
Subject: Added faster cairo_fixed_from_double()

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@638 311d38ba-8fff-0310-9ca6-ca027cbcb966
---
 meta/packages/cairo/files/cairo-fixed.patch | 43 +++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 meta/packages/cairo/files/cairo-fixed.patch

(limited to 'meta/packages/cairo/files')

diff --git a/meta/packages/cairo/files/cairo-fixed.patch b/meta/packages/cairo/files/cairo-fixed.patch
new file mode 100644
index 000000000..8df54d9cb
--- /dev/null
+++ b/meta/packages/cairo/files/cairo-fixed.patch
@@ -0,0 +1,43 @@
+diff -ur cairo-1.2.4/src/cairo-fixed.c cairo-1.2.4-new/src/cairo-fixed.c
+--- cairo-1.2.4/src/cairo-fixed.c	2006-06-10 07:07:37.000000000 +0300
++++ cairo-1.2.4-new/src/cairo-fixed.c	2006-08-25 13:06:26.000000000 +0300
+@@ -43,12 +43,6 @@
+ }
+ 
+ cairo_fixed_t
+-_cairo_fixed_from_double (double d)
+-{
+-    return (cairo_fixed_t) floor (d * 65536 + 0.5);
+-}
+-
+-cairo_fixed_t
+ _cairo_fixed_from_26_6 (uint32_t i)
+ {
+     return i << 10;
+diff -ur cairo-1.2.4/src/cairoint.h cairo-1.2.4-new/src/cairoint.h
+--- cairo-1.2.4/src/cairoint.h	2006-08-18 17:20:16.000000000 +0300
++++ cairo-1.2.4-new/src/cairoint.h	2006-08-25 13:14:07.000000000 +0300
+@@ -1117,8 +1117,21 @@
+ 
+ #define CAIRO_FIXED_ONE _cairo_fixed_from_int (1)
+ 
+-cairo_private cairo_fixed_t
+-_cairo_fixed_from_double (double d);
++#define CAIRO_DOUBLE2FIX_MAGIC 103079215104.0 /* 2 ^ (52 - 16) * 1.5 */
++
++#ifdef WORDS_BIGENDIAN
++#define iman 1
++#else
++#define iman 0
++#endif
++
++static inline cairo_fixed_t
++_cairo_fixed_from_double (double d)
++{
++        d = d + CAIRO_DOUBLE2FIX_MAGIC;
++        
++        return ((cairo_fixed_t *) &d)[iman];
++}
+ 
+ cairo_private cairo_fixed_t
+ _cairo_fixed_from_26_6 (uint32_t i);
-- 
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