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57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* Test of tanl() function.
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Copyright (C) 2010-2026 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
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#include <config.h>
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#include <math.h>
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#include "signature.h"
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SIGNATURE_CHECK (tanl, long double, (long double));
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#include "fpucw.h"
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#include "macros.h"
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volatile long double x;
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long double y;
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int
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main ()
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{
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DECL_LONG_DOUBLE_ROUNDING
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BEGIN_LONG_DOUBLE_ROUNDING ();
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/* A particular value. */
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x = 0.6L;
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y = tanl (x);
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ASSERT (y >= 0.6841368083L && y <= 0.6841368084L);
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/* A small negative value. */
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x = -0.1L;
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y = tanl (x);
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ASSERT (y >= -0.10033467209L && y <= -0.10033467208L);
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/* A very small negative value. */
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x = -0.000000000000000004L;
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y = tanl (x);
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ASSERT (y >= -0.000000000000000004000000001L
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&& y <= -0.000000000000000004000000000L);
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return test_exit_status;
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}
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