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Fix acosf underflow (bug 14153).

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This commit is contained in:
Joseph Myers
2012-05-25 11:07:07 +00:00
parent b0bc23a177
commit b65504975c
4 changed files with 11 additions and 4 deletions
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3
math/libm-test.inc
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@@ -804,8 +804,7 @@ acos_test (void)
TEST_f_f (acos, 0.5, M_PI_6l*2.0);
TEST_f_f (acos, -0.5, M_PI_6l*4.0);
TEST_f_f (acos, 0.75L, 0.722734247813415611178377352641333362L);
/* Bug 14153: spurious exception may occur. */
TEST_f_f (acos, 2e-17L, 1.57079632679489659923132169163975144L, UNDERFLOW_EXCEPTION_OK_FLOAT);
TEST_f_f (acos, 2e-17L, 1.57079632679489659923132169163975144L);
TEST_f_f (acos, 0.0625L, 1.50825556499840522843072005474337068L);
TEST_f_f (acos, 0x0.ffffffp0L, 3.4526698471620358760324948263873649728491e-4L);
TEST_f_f (acos, -0x0.ffffffp0L, 3.1412473866050770348750401337968641476999L);