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| author | Joseph Myers <joseph@codesourcery.com> | 2016-06-08 21:32:57 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-06-08 21:32:57 +0000 |
| commit | 9946e7a949d3b0f2795d930aa2f2ce7bda5e4f8a (patch) | |
| tree | b4d6e0cee63b44011a3cfbf6e4be60db0cd51de4 /math/libm-test.inc | |
| parent | 40720ec9f98d57214d73d6fa98019e684f2eb45a (diff) | |
| download | glibc-9946e7a949d3b0f2795d930aa2f2ce7bda5e4f8a.tar.xz glibc-9946e7a949d3b0f2795d930aa2f2ce7bda5e4f8a.zip | |
Fix ldexp, scalbn, scalbln for sNaN input (bug 20225).
The wrapper implementations of ldexp / scalbn / scalbln
(architecture-independent), and their float / long double variants,
return sNaN for sNaN input. This patch fixes them to add relevant
arguments to themselves so that qNaN is returned in this case.
Tested for x86_64 and x86.
[BZ #20225]
* math/s_ldexp.c (__ldexp): Add non-finite or zero argument to
itself.
* math/s_ldexpf.c (__ldexpf): Likewise.
* math/s_ldexpl.c (__ldexpl): Likewise.
* math/w_scalbln.c (__w_scalbln): Likewise.
* math/w_scalblnf.c (__w_scalblnf): Likewise.
* math/w_scalblnl.c (__w_scalblnl): Likewise.
* math/libm-test.inc (scalbn_test_data): Add sNaN tests.
(scalbln_test_data): Likewise.
Diffstat (limited to 'math/libm-test.inc')
| -rw-r--r-- | math/libm-test.inc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index 520f141446..583c27cfc0 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -11117,6 +11117,8 @@ static const struct test_fi_f_data scalbn_test_data[] = TEST_fi_f (scalbn, minus_infty, 1, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_fi_f (scalbn, qnan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_fi_f (scalbn, -qnan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), + TEST_fi_f (scalbn, snan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION), + TEST_fi_f (scalbn, -snan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION), TEST_fi_f (scalbn, 0.8L, 4, 12.8L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_fi_f (scalbn, -0.854375L, 5, -27.34L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), @@ -11199,6 +11201,8 @@ static const struct test_fl_f_data scalbln_test_data[] = TEST_fl_f (scalbln, minus_infty, 1, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_fl_f (scalbln, qnan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_fl_f (scalbln, -qnan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), + TEST_fl_f (scalbln, snan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION), + TEST_fl_f (scalbln, -snan_value, 1, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION), TEST_fl_f (scalbln, 0.8L, 4, 12.8L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_fl_f (scalbln, -0.854375L, 5, -27.34L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), |