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As per C11 DR#471, ctanh (0 + i NaN) and ctanh (0 + i Inf) should return 0 + i NaN (with "invalid" exception in the second case but not the first), not NaN + i NaN. This has corresponding implications for ctan since its special cases are defined by ctan (z) = -i ctanh (iz). This patch implements these cases for ctanh and ctan, updating tests accordingly. Tested for x86_64. [BZ #22568] * math/s_ctan_template.c (M_DECL_FUNC (__ctan)): Set imaginary part of result to imaginary part of argument if it is zero and the real part of the argument is not finite. * math/s_ctanh_template.c (M_DECL_FUNC (__ctanh)): Set real part of result to real part of argument if it is zero and the imaginary part of the argument is not finite.
141 lines
6.0 KiB
SQL
141 lines
6.0 KiB
SQL
/* Test ctanh.
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Copyright (C) 1997-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include "libm-test-driver.c"
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static const struct test_c_c_data ctanh_test_data[] =
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{
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TEST_c_c (ctanh, plus_infty, 0, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, 1, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, 2, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, 3, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, 4, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, min_value, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, min_subnorm_value, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, 0x1p127, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, 0x1.11p127, 1.0, minus_zero),
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#if !TEST_COND_binary32
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TEST_c_c (ctanh, plus_infty, 0x1p1023, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, 0x1.5p1023, 1.0, 0.0),
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#endif
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#if MAX_EXP >= 16384
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TEST_c_c (ctanh, plus_infty, 0x1p16383L, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, 0x1.2p16383L, 1.0, minus_zero),
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#endif
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TEST_c_c (ctanh, plus_infty, minus_zero, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, -1, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, -2, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, -3, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, -4, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, -min_value, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, -min_subnorm_value, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, -0x1p127, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, -0x1.11p127, 1.0, 0.0),
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#if !TEST_COND_binary32
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TEST_c_c (ctanh, plus_infty, -0x1p1023, 1.0, 0.0),
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TEST_c_c (ctanh, plus_infty, -0x1.5p1023, 1.0, minus_zero),
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#endif
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#if MAX_EXP >= 16384
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TEST_c_c (ctanh, plus_infty, -0x1p16383L, 1.0, minus_zero),
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TEST_c_c (ctanh, plus_infty, -0x1.2p16383L, 1.0, 0.0),
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#endif
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TEST_c_c (ctanh, minus_infty, 0, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, 1, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, 2, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, 3, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, 4, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, min_value, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, min_subnorm_value, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, 0x1p127, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, 0x1.11p127, -1.0, minus_zero),
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#if !TEST_COND_binary32
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TEST_c_c (ctanh, minus_infty, 0x1p1023, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, 0x1.5p1023, -1.0, 0.0),
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#endif
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#if MAX_EXP >= 16384
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TEST_c_c (ctanh, minus_infty, 0x1p16383L, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, 0x1.2p16383L, -1.0, minus_zero),
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#endif
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TEST_c_c (ctanh, minus_infty, minus_zero, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, -1, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, -2, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, -3, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, -4, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, -min_value, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, -min_subnorm_value, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, -0x1p127, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, -0x1.11p127, -1.0, 0.0),
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#if !TEST_COND_binary32
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TEST_c_c (ctanh, minus_infty, -0x1p1023, -1.0, 0.0),
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TEST_c_c (ctanh, minus_infty, -0x1.5p1023, -1.0, minus_zero),
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#endif
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#if MAX_EXP >= 16384
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TEST_c_c (ctanh, minus_infty, -0x1p16383L, -1.0, minus_zero),
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TEST_c_c (ctanh, minus_infty, -0x1.2p16383L, -1.0, 0.0),
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#endif
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TEST_c_c (ctanh, 0, plus_infty, 0, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, 2, plus_infty, qnan_value, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, 0, minus_infty, 0, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, 2, minus_infty, qnan_value, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, minus_zero, plus_infty, minus_zero, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, -2, plus_infty, qnan_value, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, minus_zero, minus_infty, minus_zero, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, -2, minus_infty, qnan_value, qnan_value, INVALID_EXCEPTION),
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TEST_c_c (ctanh, plus_infty, qnan_value, 1.0, 0.0, IGNORE_ZERO_INF_SIGN),
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TEST_c_c (ctanh, plus_infty, plus_infty, 1.0, 0.0, IGNORE_ZERO_INF_SIGN),
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TEST_c_c (ctanh, plus_infty, minus_infty, 1.0, 0.0, IGNORE_ZERO_INF_SIGN),
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TEST_c_c (ctanh, minus_infty, qnan_value, -1.0, 0.0, IGNORE_ZERO_INF_SIGN),
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TEST_c_c (ctanh, minus_infty, plus_infty, -1.0, 0.0, IGNORE_ZERO_INF_SIGN),
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TEST_c_c (ctanh, minus_infty, minus_infty, -1.0, 0.0, IGNORE_ZERO_INF_SIGN),
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TEST_c_c (ctanh, qnan_value, 0, qnan_value, 0.0),
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TEST_c_c (ctanh, qnan_value, minus_zero, qnan_value, minus_zero),
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TEST_c_c (ctanh, qnan_value, 0.5, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
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TEST_c_c (ctanh, qnan_value, -4.5, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
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TEST_c_c (ctanh, 0, qnan_value, 0, qnan_value),
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TEST_c_c (ctanh, 5, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
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TEST_c_c (ctanh, minus_zero, qnan_value, minus_zero, qnan_value),
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TEST_c_c (ctanh, -0.25, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
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TEST_c_c (ctanh, qnan_value, qnan_value, qnan_value, qnan_value),
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AUTO_TESTS_c_c (ctanh),
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};
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static void
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ctanh_test (void)
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{
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ALL_RM_TEST (ctanh, 0, ctanh_test_data, RUN_TEST_LOOP_c_c, END_COMPLEX);
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}
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static void
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do_test (void)
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{
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ctanh_test ();
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}
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/*
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* Local Variables:
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* mode:c
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* End:
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*/
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