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git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@29042 a95241bf-73f2-0310-859d-f6bbb57e9c96
135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
/* Test file for mpfr_tanh.
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Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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Contributed by the Arenaire and Cacao projects, INRIA.
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This file is part of the MPFR Library.
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The MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the MPFR Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "mpfr-test.h"
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#define TEST_FUNCTION mpfr_tanh
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#include "tgeneric.c"
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static void
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special (void)
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{
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mpfr_t x;
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mpfr_init (x);
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mpfr_set_nan (x);
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mpfr_tanh (x, x, GMP_RNDN);
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MPFR_ASSERTN(mpfr_nan_p (x));
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mpfr_set_inf (x, 1);
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mpfr_tanh (x, x, GMP_RNDN);
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MPFR_ASSERTN(mpfr_cmp_ui (x, 1) == 0);
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mpfr_set_inf (x, -1);
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mpfr_tanh (x, x, GMP_RNDN);
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MPFR_ASSERTN(mpfr_cmp_si (x, -1) == 0);
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mpfr_set_prec (x, 10);
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mpfr_set_str_binary (x, "-0.1001011001");
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mpfr_tanh (x, x, GMP_RNDN);
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MPFR_ASSERTN(mpfr_cmp_si_2exp (x, -135, -8) == 0);
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mpfr_clear (x);
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}
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static void
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special_overflow (void)
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{
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mpfr_t x, y;
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int i;
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mp_exp_t emin, emax;
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emin = mpfr_get_emin ();
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emax = mpfr_get_emax ();
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mpfr_clear_overflow ();
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set_emin (-125);
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set_emax (128);
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mpfr_init2 (x, 24);
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mpfr_init2 (y, 24);
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mpfr_set_str_binary (x, "0.101100100000000000110100E7");
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i = mpfr_tanh (y, x, GMP_RNDN);
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if (mpfr_cmp_ui (y, 1) || i != 1)
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{
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printf("Overflow error (1). i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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MPFR_ASSERTN (!mpfr_overflow_p ());
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i = mpfr_tanh (y, x, GMP_RNDZ);
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if (mpfr_cmp_str (y, "0.111111111111111111111111E0", 2, GMP_RNDN)
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|| i != -1)
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{
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printf("Overflow error (2).i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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MPFR_ASSERTN (!mpfr_overflow_p ());
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set_emin (emin);
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set_emax (emax);
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mpfr_set_str_binary (x, "0.1E1000000000");
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i = mpfr_tanh (y, x, GMP_RNDN);
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if (mpfr_cmp_ui (y, 1) || i != 1)
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{
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printf("Overflow error (3). i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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MPFR_ASSERTN (!mpfr_overflow_p ());
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mpfr_set_str_binary (x, "-0.1E1000000000");
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i = mpfr_tanh (y, x, GMP_RNDU);
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if (mpfr_cmp_str (y, "-0.111111111111111111111111E0", 2, GMP_RNDN)
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|| i != 1)
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{
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printf("Overflow error (4). i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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mpfr_clear (y);
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mpfr_clear (x);
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}
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int
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main (int argc, char *argv[])
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{
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tests_start_mpfr ();
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special_overflow ();
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special ();
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test_generic (2, 100, 100);
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data_check ("data/tanh", mpfr_tanh, "mpfr_tanh");
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tests_end_mpfr ();
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return 0;
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}
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