1/* ty1 -- test file for the Bessel function of second kind (order 1) 2 3Copyright 2007-2023 Free Software Foundation, Inc. 4Contributed by the AriC and Caramba 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 20https://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 "mpfr-test.h" 24 25#define TEST_FUNCTION mpfr_y1 26#define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 8, RANDS) 27#define REDUCE_EMAX 262143 /* otherwise arg. reduction is too expensive */ 28#include "tgeneric.c" 29 30int 31main (int argc, char *argv[]) 32{ 33 mpfr_t x, y; 34 35 tests_start_mpfr (); 36 37 mpfr_init (x); 38 mpfr_init (y); 39 40 /* special values */ 41 mpfr_set_nan (x); 42 mpfr_y1 (y, x, MPFR_RNDN); 43 MPFR_ASSERTN(mpfr_nan_p (y)); 44 45 mpfr_set_inf (x, 1); /* +Inf */ 46 mpfr_y1 (y, x, MPFR_RNDN); 47 MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y)); 48 49 mpfr_set_inf (x, -1); /* -Inf */ 50 mpfr_y1 (y, x, MPFR_RNDN); 51 MPFR_ASSERTN(mpfr_nan_p (y)); 52 53 mpfr_set_ui (x, 0, MPFR_RNDN); /* +0 */ 54 mpfr_y1 (y, x, MPFR_RNDN); 55 MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y1(+0)=-Inf */ 56 57 mpfr_set_ui (x, 0, MPFR_RNDN); 58 mpfr_neg (x, x, MPFR_RNDN); /* -0 */ 59 mpfr_y1 (y, x, MPFR_RNDN); 60 MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y1(-0)=-Inf */ 61 62 mpfr_set_prec (x, 53); 63 mpfr_set_prec (y, 53); 64 65 mpfr_set_ui (x, 1, MPFR_RNDN); 66 mpfr_y1 (y, x, MPFR_RNDN); 67 mpfr_set_str_binary (x, "-0.110001111111110110010000001111101011001101011100101"); 68 if (mpfr_cmp (x, y)) 69 { 70 printf ("Error in mpfr_y1 for x=1, rnd=MPFR_RNDN\n"); 71 printf ("Expected "); mpfr_dump (x); 72 printf ("Got "); mpfr_dump (y); 73 exit (1); 74 } 75 76 mpfr_set_si (x, -1, MPFR_RNDN); 77 mpfr_y1 (y, x, MPFR_RNDN); 78 if (!mpfr_nan_p (y)) 79 { 80 printf ("Error in mpfr_y1 for x=-1, rnd=MPFR_RNDN\n"); 81 printf ("Expected NaN\n"); 82 printf ("Got "); mpfr_dump (y); 83 exit (1); 84 } 85 86 mpfr_clear (x); 87 mpfr_clear (y); 88 89 test_generic (MPFR_PREC_MIN, 100, 1); 90 91 data_check ("data/y1", mpfr_y1, "mpfr_y1"); 92 93 tests_end_mpfr (); 94 95 return 0; 96} 97