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GNU C Library master sources branch master updated. glibc-2.23-443-g8c010e2
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 8 Jun 2016 23:12:02 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.23-443-g8c010e2
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=8c010e2f7135902b6dc90f0577573dacbb54cde9
commit 8c010e2f7135902b6dc90f0577573dacbb54cde9
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Jun 8 23:11:42 2016 +0000
Fix i386/x86_64 log1pl (sNaN) (bug 20229).
The i386/x86_64 versions of log1pl return sNaN for sNaN input. This
patch fixes them to add a NaN input to itself so that qNaN is returned
in this case.
Tested for x86_64 and x86.
[BZ #20229]
* sysdeps/i386/fpu/s_log1pl.S (__log1pl): Add NaN input to itself.
* sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Likewise.
* math/libm-test.inc (log1p_test_data): Add sNaN tests.
diff --git a/ChangeLog b/ChangeLog
index 42d296c..12ac302 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
2016-06-08 Joseph Myers <joseph@codesourcery.com>
+ [BZ #20229]
+ * sysdeps/i386/fpu/s_log1pl.S (__log1pl): Add NaN input to itself.
+ * sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Likewise.
+ * math/libm-test.inc (log1p_test_data): Add sNaN tests.
+
[BZ #20228]
* sysdeps/i386/fpu/e_log10l.S (__ieee754_log10l): Add NaN input to
itself.
diff --git a/math/libm-test.inc b/math/libm-test.inc
index e2a4ed3..4371c4c 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -9049,6 +9049,8 @@ static const struct test_f_f_data log1p_test_data[] =
TEST_f_f (log1p, plus_infty, plus_infty, ERRNO_UNCHANGED),
TEST_f_f (log1p, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_f_f (log1p, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
+ TEST_f_f (log1p, snan_value, qnan_value, INVALID_EXCEPTION),
+ TEST_f_f (log1p, -snan_value, qnan_value, INVALID_EXCEPTION),
AUTO_TESTS_f_f (log1p),
};
diff --git a/sysdeps/i386/fpu/s_log1pl.S b/sysdeps/i386/fpu/s_log1pl.S
index 98965fa..0fd05cb 100644
--- a/sysdeps/i386/fpu/s_log1pl.S
+++ b/sysdeps/i386/fpu/s_log1pl.S
@@ -70,6 +70,7 @@ ENTRY(__log1pl)
3: jp 4b // in case x is ±Inf
fstp %st(1)
fstp %st(1)
+ fadd %st(0)
ret
END (__log1pl)
diff --git a/sysdeps/x86_64/fpu/s_log1pl.S b/sysdeps/x86_64/fpu/s_log1pl.S
index e83f64d..947e5e4 100644
--- a/sysdeps/x86_64/fpu/s_log1pl.S
+++ b/sysdeps/x86_64/fpu/s_log1pl.S
@@ -68,6 +68,7 @@ ENTRY(__log1pl)
jnz 4b // in case x is ±Inf
fstp %st(1)
fstp %st(1)
+ fadd %st(0)
ret
END (__log1pl)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
math/libm-test.inc | 2 ++
sysdeps/i386/fpu/s_log1pl.S | 1 +
sysdeps/x86_64/fpu/s_log1pl.S | 1 +
4 files changed, 9 insertions(+), 0 deletions(-)
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