1/* tj1 -- test file for the Bessel function of first kind (order 1) 2 3Copyright 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 4Contributed by the Arenaire and Cacao projects, INRIA. 5 6This file is part of the GNU MPFR Library. 7 8The GNU MPFR Library is free software; you can redistribute it and/or modify 9it under the terms of the GNU Lesser General Public License as published by 10the Free Software Foundation; either version 3 of the License, or (at your 11option) any later version. 12 13The GNU MPFR Library is distributed in the hope that it will be useful, but 14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 16License for more details. 17 18You should have received a copy of the GNU Lesser General Public License 19along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see 20http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., 2151 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ 22 23#include <stdio.h> 24#include <stdlib.h> 25 26#include "mpfr-test.h" 27 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 */ 31#include "tgeneric.c" 32 33int 34main (int argc, char *argv[]) 35{ 36 mpfr_t x, y; 37 38 tests_start_mpfr (); 39 40 mpfr_init (x); 41 mpfr_init (y); 42 43 /* special values */ 44 mpfr_set_nan (x); 45 mpfr_j1 (y, x, MPFR_RNDN); 46 MPFR_ASSERTN(mpfr_nan_p (y)); 47 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)); 51 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)); 55 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 */ 59 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 */ 64 65 mpfr_set_prec (x, 53); 66 mpfr_set_prec (y, 53); 67 68 mpfr_set_ui (x, 1, MPFR_RNDN); 69 mpfr_j1 (y, x, MPFR_RNDN); 70 mpfr_set_str_binary (x, "0.0111000010100111001001111011101001011100001100011011"); 71 if (mpfr_cmp (x, y)) 72 { 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); 76 exit (1); 77 } 78 mpfr_clear (x); 79 mpfr_clear (y); 80 81 test_generic (2, 100, 10); 82 83 data_check ("data/j1", mpfr_j1, "mpfr_j1"); 84 85 tests_end_mpfr (); 86 87 return 0; 88} 89