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| author | Joseph Myers <joseph@codesourcery.com> | 2016-06-08 21:02:40 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-06-08 21:02:40 +0000 |
| commit | 40720ec9f98d57214d73d6fa98019e684f2eb45a (patch) | |
| tree | 2c73ae577c76260bc804a986f638f67f5ef429c0 /math | |
| parent | c867597bff2562180a18da4b8dba89d24e8b65c4 (diff) | |
| download | glibc-40720ec9f98d57214d73d6fa98019e684f2eb45a.tar glibc-40720ec9f98d57214d73d6fa98019e684f2eb45a.tar.gz glibc-40720ec9f98d57214d73d6fa98019e684f2eb45a.tar.bz2 glibc-40720ec9f98d57214d73d6fa98019e684f2eb45a.zip | |
Fix i386 cbrtl (sNaN) (bug 20224).
The i386 version of cbrtl returns sNaN (without raising any
exceptions) for sNaN input. This patch fixes it to add non-finite
arguments to themselves (the code path in question is also reached for
zero arguments, for which adding them to themselves is also harmless),
so that "invalid" is raised and qNaN returned.
Tested for x86_64 and x86.
[BZ #20224]
* sysdeps/i386/fpu/s_cbrtl.S (__cbrtl): Add non-finite or zero
argument to itself.
* math/libm-test.inc (cbrt_test_data): Add sNaN tests.
Diffstat (limited to 'math')
| -rw-r--r-- | math/libm-test.inc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index 7913f44752..520f141446 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -5875,6 +5875,8 @@ static const struct test_f_f_data cbrt_test_data[] = TEST_f_f (cbrt, minus_infty, minus_infty, ERRNO_UNCHANGED), TEST_f_f (cbrt, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_f_f (cbrt, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), + TEST_f_f (cbrt, snan_value, qnan_value, INVALID_EXCEPTION), + TEST_f_f (cbrt, -snan_value, qnan_value, INVALID_EXCEPTION), AUTO_TESTS_f_f (cbrt), }; |