Added faster cairo_fixed_from_double()
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@638 311d38ba-8fff-0310-9ca6-ca027cbcb966
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@ -6,7 +6,8 @@ DESCRIPTION = "Cairo graphics library"
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LICENSE = "MPL LGPL"
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PR = "r1"
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SRC_URI = "http://cairographics.org/releases/cairo-${PV}.tar.gz"
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SRC_URI = "http://cairographics.org/releases/cairo-${PV}.tar.gz \
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file://cairo-fixed.patch;patch=1"
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inherit autotools pkgconfig
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@ -0,0 +1,43 @@
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diff -ur cairo-1.2.4/src/cairo-fixed.c cairo-1.2.4-new/src/cairo-fixed.c
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--- cairo-1.2.4/src/cairo-fixed.c 2006-06-10 07:07:37.000000000 +0300
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+++ cairo-1.2.4-new/src/cairo-fixed.c 2006-08-25 13:06:26.000000000 +0300
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@@ -43,12 +43,6 @@
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}
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cairo_fixed_t
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-_cairo_fixed_from_double (double d)
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-{
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- return (cairo_fixed_t) floor (d * 65536 + 0.5);
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-}
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-
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-cairo_fixed_t
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_cairo_fixed_from_26_6 (uint32_t i)
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{
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return i << 10;
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diff -ur cairo-1.2.4/src/cairoint.h cairo-1.2.4-new/src/cairoint.h
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--- cairo-1.2.4/src/cairoint.h 2006-08-18 17:20:16.000000000 +0300
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+++ cairo-1.2.4-new/src/cairoint.h 2006-08-25 13:14:07.000000000 +0300
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@@ -1117,8 +1117,21 @@
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#define CAIRO_FIXED_ONE _cairo_fixed_from_int (1)
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-cairo_private cairo_fixed_t
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-_cairo_fixed_from_double (double d);
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+#define CAIRO_DOUBLE2FIX_MAGIC 103079215104.0 /* 2 ^ (52 - 16) * 1.5 */
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+
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+#ifdef WORDS_BIGENDIAN
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+#define iman 1
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+#else
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+#define iman 0
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+#endif
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+
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+static inline cairo_fixed_t
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+_cairo_fixed_from_double (double d)
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+{
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+ d = d + CAIRO_DOUBLE2FIX_MAGIC;
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+
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+ return ((cairo_fixed_t *) &d)[iman];
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+}
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cairo_private cairo_fixed_t
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_cairo_fixed_from_26_6 (uint32_t i);
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