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Diffstat (limited to 'mpfr/tests/tj1.c')
-rw-r--r-- | mpfr/tests/tj1.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/mpfr/tests/tj1.c b/mpfr/tests/tj1.c new file mode 100644 index 0000000000..fe5bb8d670 --- /dev/null +++ b/mpfr/tests/tj1.c @@ -0,0 +1,88 @@ +/* tj1 -- test file for the Bessel function of first kind (order 1) + +Copyright 2007-2016 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_j1 +#define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 8, RANDS) +#define REDUCE_EMAX 262143 /* otherwise arg. reduction is too expensive */ +#include "tgeneric.c" + +int +main (int argc, char *argv[]) +{ + mpfr_t x, y; + + tests_start_mpfr (); + + mpfr_init (x); + mpfr_init (y); + + /* special values */ + mpfr_set_nan (x); + mpfr_j1 (y, x, MPFR_RNDN); + MPFR_ASSERTN(mpfr_nan_p (y)); + + mpfr_set_inf (x, 1); /* +Inf */ + mpfr_j1 (y, x, MPFR_RNDN); + MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y)); + + mpfr_set_inf (x, -1); /* -Inf */ + mpfr_j1 (y, x, MPFR_RNDN); + MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y)); + + mpfr_set_ui (x, 0, MPFR_RNDN); /* +0 */ + mpfr_j1 (y, x, MPFR_RNDN); + MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y)); /* j1(+0)=+0 */ + + mpfr_set_ui (x, 0, MPFR_RNDN); + mpfr_neg (x, x, MPFR_RNDN); /* -0 */ + mpfr_j1 (y, x, MPFR_RNDN); + MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_NEG (y)); /* j1(-0)=-0 */ + + mpfr_set_prec (x, 53); + mpfr_set_prec (y, 53); + + mpfr_set_ui (x, 1, MPFR_RNDN); + mpfr_j1 (y, x, MPFR_RNDN); + mpfr_set_str_binary (x, "0.0111000010100111001001111011101001011100001100011011"); + if (mpfr_cmp (x, y)) + { + printf ("Error in mpfr_j1 for x=1, rnd=MPFR_RNDN\n"); + printf ("Expected "); mpfr_dump (x); + printf ("Got "); mpfr_dump (y); + exit (1); + } + mpfr_clear (x); + mpfr_clear (y); + + test_generic (2, 100, 10); + + data_check ("data/j1", mpfr_j1, "mpfr_j1"); + + tests_end_mpfr (); + + return 0; +} |