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Diffstat (limited to 'mpfr/tests/tcsch.c')
-rw-r--r-- | mpfr/tests/tcsch.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/mpfr/tests/tcsch.c b/mpfr/tests/tcsch.c new file mode 100644 index 0000000000..348a3c9cb6 --- /dev/null +++ b/mpfr/tests/tcsch.c @@ -0,0 +1,110 @@ +/* Test file for mpfr_csch. + +Copyright 2005-2016 Free Software Foundation, Inc. +Contributed by the AriC and Caramba projects, INRIA. + +This file is part of the GNU MPFR Library. + +The GNU MPFR Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 3 of the License, or (at your +option) any later version. + +The GNU MPFR Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see +http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., +51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include <stdio.h> +#include <stdlib.h> + +#include "mpfr-test.h" + +#define TEST_FUNCTION mpfr_csch +#define TEST_RANDOM_EMAX 63 +#include "tgeneric.c" + +static void +check_specials (void) +{ + mpfr_t x, y; + + mpfr_init2 (x, 123L); + mpfr_init2 (y, 123L); + + mpfr_set_nan (x); + mpfr_csch (y, x, MPFR_RNDN); + if (! mpfr_nan_p (y)) + { + printf ("Error: csch(NaN) != NaN\n"); + exit (1); + } + + mpfr_set_inf (x, 1); + mpfr_csch (y, x, MPFR_RNDN); + if (! (mpfr_zero_p (y) && MPFR_SIGN (y) >0)) + { + printf ("Error: csch(+Inf) != +0\n"); + exit (1); + } + + mpfr_set_inf (x, -1); + mpfr_csch (y, x, MPFR_RNDN); + if (! (mpfr_zero_p (y) && MPFR_SIGN (y) <0)) + { + printf ("Error: csch(-0) != -0\n"); + exit (1); + } + + /* csc(+/-0) = +/-Inf */ + mpfr_set_ui (x, 0, MPFR_RNDN); + mpfr_csch (y, x, MPFR_RNDN); + if (! (mpfr_inf_p (y) && mpfr_sgn (y) > 0)) + { + printf ("Error: csch(+0) != +Inf\n"); + exit (1); + } + mpfr_neg (x, x, MPFR_RNDN); + mpfr_csch (y, x, MPFR_RNDN); + if (! (mpfr_inf_p (y) && mpfr_sgn (y) < 0)) + { + printf ("Error: csch(-0) != -Inf\n"); + exit (1); + } + + /* check huge x */ + mpfr_set_str (x, "8e8", 10, MPFR_RNDN); + mpfr_csch (y, x, MPFR_RNDN); + if (! (mpfr_zero_p (y) && MPFR_SIGN (y) > 0)) + { + printf ("Error: csch(8e8) != +0\n"); + exit (1); + } + mpfr_set_str (x, "-8e8", 10, MPFR_RNDN); + mpfr_csch (y, x, MPFR_RNDN); + if (! (mpfr_zero_p (y) && MPFR_SIGN (y) < 0)) + { + printf ("Error: csch(-8e8) != -0\n"); + exit (1); + } + + mpfr_clear (x); + mpfr_clear (y); +} + +int +main (int argc, char *argv[]) +{ + tests_start_mpfr (); + + check_specials (); + test_generic (2, 200, 10); + + tests_end_mpfr (); + return 0; +} |