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Fix fdim handling of infinities (bug 15797).

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This commit is contained in:
Joseph Myers
2013-08-21 19:56:48 +00:00
parent c0c3f78afb
commit acd06bb11f
6 changed files with 51 additions and 37 deletions
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52
math/libm-test.inc
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@@ -8144,33 +8144,37 @@ fabs_test (void)
static const struct test_ff_f_data fdim_test_data[] =
{
TEST_ff_f (fdim, 0, 0, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 9, 0, 9, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 0, 9, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, -9, 0, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 0, -9, 9, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 0, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, 9, 0, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, 0, 9, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, -9, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, 0, -9, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, plus_infty, 9, plus_infty, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, plus_infty, -9, plus_infty, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, minus_infty, 9, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, minus_infty, -9, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 9, minus_infty, plus_infty, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, -9, minus_infty, plus_infty, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 9, plus_infty, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, -9, plus_infty, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, plus_infty, 9, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, plus_infty, -9, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, minus_infty, 9, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, minus_infty, -9, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, 9, minus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, -9, minus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, 9, plus_infty, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, -9, plus_infty, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, 0, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 9, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, -9, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, qnan_value, 9, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, qnan_value, -9, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, plus_infty, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, minus_infty, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, qnan_value, plus_infty, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, qnan_value, minus_infty, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, 0, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, 9, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, -9, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, qnan_value, 0, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, qnan_value, 9, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, qnan_value, -9, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, plus_infty, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, minus_infty, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, qnan_value, plus_infty, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, qnan_value, minus_infty, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, plus_infty, plus_infty, 0, NO_INEXACT_EXCEPTION),
TEST_ff_f (fdim, plus_infty, plus_infty, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, plus_infty, minus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, minus_infty, plus_infty, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fdim, minus_infty, minus_infty, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
};
static void