1 /* tj1 -- test file for the Bessel function of first kind (order 1)
3 Copyright 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Contributed by the AriC and Caramel projects, INRIA.
6 This file is part of the GNU MPFR Library.
8 The GNU MPFR Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
13 The GNU MPFR Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
20 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
26 #include "mpfr-test.h"
28 #define TEST_FUNCTION mpfr_j1
29 #define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 8, RANDS)
30 #define REDUCE_EMAX 262143 /* otherwise arg. reduction is too expensive */
34 main (int argc, char *argv[])
45 mpfr_j1 (y, x, MPFR_RNDN);
46 MPFR_ASSERTN(mpfr_nan_p (y));
48 mpfr_set_inf (x, 1); /* +Inf */
49 mpfr_j1 (y, x, MPFR_RNDN);
50 MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y));
52 mpfr_set_inf (x, -1); /* -Inf */
53 mpfr_j1 (y, x, MPFR_RNDN);
54 MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y));
56 mpfr_set_ui (x, 0, MPFR_RNDN); /* +0 */
57 mpfr_j1 (y, x, MPFR_RNDN);
58 MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y)); /* j1(+0)=+0 */
60 mpfr_set_ui (x, 0, MPFR_RNDN);
61 mpfr_neg (x, x, MPFR_RNDN); /* -0 */
62 mpfr_j1 (y, x, MPFR_RNDN);
63 MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_NEG (y)); /* j1(-0)=-0 */
65 mpfr_set_prec (x, 53);
66 mpfr_set_prec (y, 53);
68 mpfr_set_ui (x, 1, MPFR_RNDN);
69 mpfr_j1 (y, x, MPFR_RNDN);
70 mpfr_set_str_binary (x, "0.0111000010100111001001111011101001011100001100011011");
73 printf ("Error in mpfr_j1 for x=1, rnd=MPFR_RNDN\n");
74 printf ("Expected "); mpfr_dump (x);
75 printf ("Got "); mpfr_dump (y);
81 test_generic (2, 100, 10);
83 data_check ("data/j1", mpfr_j1, "mpfr_j1");