diff options
Diffstat (limited to 'package/cairo/old_patches')
2 files changed, 0 insertions, 182 deletions
diff --git a/package/cairo/old_patches/0001-Add-autoconf-macro-AX_C_FLOAT_WORDS_BIGENDIAN.patch b/package/cairo/old_patches/0001-Add-autoconf-macro-AX_C_FLOAT_WORDS_BIGENDIAN.patch deleted file mode 100644 index 90718d497..000000000 --- a/package/cairo/old_patches/0001-Add-autoconf-macro-AX_C_FLOAT_WORDS_BIGENDIAN.patch +++ /dev/null @@ -1,103 +0,0 @@ -From nobody Mon Sep 17 00:00:00 2001 -From: Dan Amelang <dan@amelang.net> -Date: Sun Oct 29 21:30:08 2006 -0800 -Subject: [PATCH] Add autoconf macro AX_C_FLOAT_WORDS_BIGENDIAN - -The symbol that this macro defines (FLOAT_WORDS_BIGENDIAN) can be used -to make double arithmetic tricks portable. - ---- - - acinclude.m4 | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ - configure.in | 1 + - 2 files changed, 66 insertions(+), 0 deletions(-) - -3231d91b59a6c2e1c40bbaa8b143694b6c693662 -diff --git a/acinclude.m4 b/acinclude.m4 -index af73800..a0eb13a 100644 ---- a/acinclude.m4 -+++ b/acinclude.m4 -@@ -51,3 +51,68 @@ ifelse([$1],[],, - AM_CONDITIONAL(ENABLE_GTK_DOC, test x$enable_gtk_doc = xyes) - AM_CONDITIONAL(GTK_DOC_USE_LIBTOOL, test -n "$LIBTOOL") - ]) -+ -+# AX_C_FLOAT_WORDS_BIGENDIAN ([ACTION-IF-TRUE], [ACTION-IF-FALSE], -+# [ACTION-IF-UNKNOWN]) -+# -+# Checks the ordering of words within a multi-word float. This check -+# is necessary because on some systems (e.g. certain ARM systems), the -+# float word ordering can be different from the byte ordering. In a -+# multi-word float context, "big-endian" implies that the word containing -+# the sign bit is found in the memory location with the lowest address. -+# This implemenation was inspired by the AC_C_BIGENDIAN macro in autoconf. -+# ------------------------------------------------------------------------- -+AC_DEFUN([AX_C_FLOAT_WORDS_BIGENDIAN], -+ [AC_CACHE_CHECK(whether float word ordering is bigendian, -+ ax_cv_c_float_words_bigendian, [ -+ -+# The endianess is detected by first compiling C code that contains a special -+# double float value, then grepping the resulting object file for certain -+# strings of ascii values. The double is specially crafted to have a -+# binary representation that corresponds with a simple string. In this -+# implementation, the string "noonsees" was selected because the individual -+# word values ("noon" and "sees") are palindromes, thus making this test -+# byte-order agnostic. If grep finds the string "noonsees" in the object -+# file, the target platform stores float words in big-endian order. If grep -+# finds "seesnoon", float words are in little-endian order. If neither value -+# is found, the user is instructed to specify the ordering. -+ -+ax_cv_c_float_words_bigendian=unknown -+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ -+ -+double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0; -+ -+]])], [ -+ -+if grep noonsees conftest.$ac_objext >/dev/null ; then -+ ax_cv_c_float_words_bigendian=yes -+fi -+if grep seesnoon conftest.$ac_objext >/dev/null ; then -+ if test "$ax_cv_c_float_words_bigendian" = unknown; then -+ ax_cv_c_float_words_bigendian=no -+ else -+ ax_cv_c_float_words_bigendian=unknown -+ fi -+fi -+ -+])]) -+ -+case $ax_cv_c_float_words_bigendian in -+ yes) -+ m4_default([$1], -+ [AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1, -+ [Define to 1 if your system stores words within floats -+ with the most significant word first])]) ;; -+ no) -+ $2 ;; -+ *) -+ m4_default([$3], -+ [AC_MSG_ERROR([ -+ -+Unknown float word ordering. You need to manually preset -+ax_cv_c_float_words_bigendian=no (or yes) according to your system. -+ -+ ])]) ;; -+esac -+ -+])# AX_C_FLOAT_WORDS_BIGENDIAN -diff --git a/configure.in b/configure.in -index 2d2bf9f..797c7ce 100644 ---- a/configure.in -+++ b/configure.in -@@ -55,6 +55,7 @@ AC_PROG_CPP - AC_PROG_LIBTOOL dnl required version (1.4) DON'T REMOVE! - AC_STDC_HEADERS - AC_C_BIGENDIAN -+AX_C_FLOAT_WORDS_BIGENDIAN - - dnl =========================================================================== - dnl === Local macros --- -1.2.6 - diff --git a/package/cairo/old_patches/0002-Change-_cairo_fixed_from_double-to-use-the-magic-number-technique.patch b/package/cairo/old_patches/0002-Change-_cairo_fixed_from_double-to-use-the-magic-number-technique.patch deleted file mode 100644 index 56d8b7e99..000000000 --- a/package/cairo/old_patches/0002-Change-_cairo_fixed_from_double-to-use-the-magic-number-technique.patch +++ /dev/null @@ -1,79 +0,0 @@ -From nobody Mon Sep 17 00:00:00 2001 -From: Dan Amelang <dan@amelang.net> -Date: Sun Oct 29 21:31:23 2006 -0800 -Subject: [PATCH] Change _cairo_fixed_from_double to use the "magic number" technique - -See long thread here: -http://lists.freedesktop.org/archives/cairo/2006-October/008285.html - ---- - - src/cairo-fixed.c | 48 +++++++++++++++++++++++++++++++++++++++++++++++- - 1 files changed, 47 insertions(+), 1 deletions(-) - -d88acddcabe770e17664b34a2d5f74d3926e1642 -diff --git a/src/cairo-fixed.c b/src/cairo-fixed.c -index 604c9e7..fe6c2dc 100644 ---- a/src/cairo-fixed.c -+++ b/src/cairo-fixed.c -@@ -42,10 +42,56 @@ _cairo_fixed_from_int (int i) - return i << 16; - } - -+/* This is the "magic number" approach to converting a double into fixed -+ * point as described here: -+ * -+ * http://www.stereopsis.com/sree/fpu2006.html (an overview) -+ * http://www.d6.com/users/checker/pdfs/gdmfp.pdf (in detail) -+ * -+ * The basic idea is to add a large enough number to the double that the -+ * literal floating point is moved up to the extent that it forces the -+ * double's value to be shifted down to the bottom of the mantissa (to make -+ * room for the large number being added in). Since the mantissa is, at a -+ * given moment in time, a fixed point integer itself, one can convert a -+ * float to various fixed point representations by moving around the point -+ * of a floating point number through arithmetic operations. This behavior -+ * is reliable on most modern platforms as it is mandated by the IEEE-754 -+ * standard for floating point arithmetic. -+ * -+ * For our purposes, a "magic number" must be carefully selected that is -+ * both large enough to produce the desired point-shifting effect, and also -+ * has no lower bits in its representation that would interfere with our -+ * value at the bottom of the mantissa. The magic number is calculated as -+ * follows: -+ * -+ * (2 ^ (MANTISSA_SIZE - FRACTIONAL_SIZE)) * 1.5 -+ * -+ * where in our case: -+ * - MANTISSA_SIZE for 64-bit doubles is 52 -+ * - FRACTIONAL_SIZE for 16.16 fixed point is 16 -+ * -+ * Although this approach provides a very large speedup of this function -+ * on a wide-array of systems, it does come with two caveats: -+ * -+ * 1) It uses banker's rounding as opposed to arithmetic rounding. -+ * 2) It doesn't function properly if the FPU is in single-precision -+ * mode. -+ */ -+#define CAIRO_MAGIC_NUMBER_FIXED_16_16 (103079215104.0) - cairo_fixed_t - _cairo_fixed_from_double (double d) - { -- return (cairo_fixed_t) floor (d * 65536 + 0.5); -+ union { -+ double d; -+ int32_t i[2]; -+ } u; -+ -+ u.d = d + CAIRO_MAGIC_NUMBER_FIXED_16_16; -+#ifdef FLOAT_WORDS_BIGENDIAN -+ return u.i[1]; -+#else -+ return u.i[0]; -+#endif - } - - cairo_fixed_t --- -1.2.6 - |