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authorJoseph Myers <joseph@codesourcery.com>2016-06-08 21:55:06 +0000
committerJoseph Myers <joseph@codesourcery.com>2016-06-08 21:55:06 +0000
commit9bd3ef8e19b19fb3cfcf99a33a1493035891b990 (patch)
treeca830d25692074e5b5800ee2f530a2d314fa2a0b /math
parent9946e7a949d3b0f2795d930aa2f2ce7bda5e4f8a (diff)
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Fix i386/x86_64 expl, exp10l, expm1l for sNaN input (bug 20226).
The i386 and x86_64 implementations of expl, exp10l and expm1l (code
shared between the functions) return sNaN for sNaN input.  This patch
fixes them to add NaN inputs to themselves so that qNaN is returned in
this case.

Tested for x86_64 and x86.

	[BZ #20226]
	* sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL): Add NaN argument to
	itself.
	* sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL): Likewise.
	* math/libm-test.inc (exp_test_data): Add sNaN tests.
	(exp10_test_data): Likewise.
	(expm1_test_data): Likewise.
Diffstat (limited to 'math')
-rw-r--r--math/libm-test.inc6
1 files changed, 6 insertions, 0 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 583c27cfc0..35a256c485 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -6992,6 +6992,8 @@ static const struct test_f_f_data exp_test_data[] =
     TEST_f_f (exp, minus_infty, 0, ERRNO_UNCHANGED|NO_TEST_INLINE),
     TEST_f_f (exp, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
     TEST_f_f (exp, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
+    TEST_f_f (exp, snan_value, qnan_value, INVALID_EXCEPTION),
+    TEST_f_f (exp, -snan_value, qnan_value, INVALID_EXCEPTION),
 
     AUTO_TESTS_f_f (exp),
   };
@@ -7009,6 +7011,8 @@ static const struct test_f_f_data exp10_test_data[] =
     TEST_f_f (exp10, minus_infty, 0, ERRNO_UNCHANGED),
     TEST_f_f (exp10, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
     TEST_f_f (exp10, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
+    TEST_f_f (exp10, snan_value, qnan_value, INVALID_EXCEPTION),
+    TEST_f_f (exp10, -snan_value, qnan_value, INVALID_EXCEPTION),
 
     AUTO_TESTS_f_f (exp10),
   };
@@ -7052,6 +7056,8 @@ static const struct test_f_f_data expm1_test_data[] =
     TEST_f_f (expm1, minus_infty, -1, ERRNO_UNCHANGED|NO_TEST_INLINE),
     TEST_f_f (expm1, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
     TEST_f_f (expm1, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
+    TEST_f_f (expm1, snan_value, qnan_value, INVALID_EXCEPTION),
+    TEST_f_f (expm1, -snan_value, qnan_value, INVALID_EXCEPTION),
 
     AUTO_TESTS_f_f (expm1),
   };