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authorJoseph Myers <joseph@codesourcery.com>2013-04-24 18:49:13 +0000
committerJoseph Myers <joseph@codesourcery.com>2013-04-24 18:49:13 +0000
commit2f38fbfe09e4856c571bf0c80844e5dac9bc77ec (patch)
tree6fc88a0757c95d123f8e8cd9b14e973c9a654d88 /ChangeLog
parent45d69176e8b6dc0787dcb8e52e4283b8e7e5e282 (diff)
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Fix catan, catanh inaccuracy through use of log (bug 15394).
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+2013-04-24  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #15394]
+	* math/s_catan.c (__catan): Calculate imaginary part of result
+	with log1p not log unless computing log of number close to 0.
+	* math/s_catanf.c (__catanf): Likewise.
+	* math/s_catanl.c (__catanl): Likewise.
+	* math/s_catanh.c (__catanh): Calculate real part of result with
+	log1p not log unless computing log of number close to 0.
+	* math/s_catanhf.c (__catanhf): Likewise.
+	* math/s_catanhl.c (__catanhl): Likewise.
+	* math/libm-test.inc (catan_test): Add more tests.
+	(catanh_test): Likewise.
+	* sysdeps/i386/fpu/libm-test-ulps: Update.
+	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
+
 2013-04-24  Siddhesh Poyarekar  <siddhesh@redhat.com>
 
 	* benchtests/Makefile: Mention files in which fast and slow