1 /* Test file for mpfr_zeta_ui. 2 3 Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 4 Contributed by the Arenaire and Cacao projects, INRIA. 5 6 This file is part of the GNU MPFR Library. 7 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. 12 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. 17 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. */ 22 23 #include <stdio.h> 24 #include <stdlib.h> 25 26 #include "mpfr-test.h" 27 28 #define TEST_FUNCTION mpfr_zeta_ui 29 30 int 31 main (int argc, char *argv[]) 32 { 33 #if MPFR_VERSION >= MPFR_VERSION_NUM(2,3,0) 34 unsigned int prec, yprec; 35 int rnd; 36 mpfr_t x, y, z, t; 37 int inexact; 38 unsigned long n; 39 40 tests_start_mpfr (); 41 42 mpfr_init (x); 43 mpfr_init (y); 44 mpfr_init (z); 45 mpfr_init (t); 46 47 if (argc >= 3) /* tzeta_ui n prec [rnd] */ 48 { 49 mpfr_set_prec (x, atoi (argv[2])); 50 mpfr_zeta_ui (x, atoi (argv[1]), 51 argc > 3 ? (mpfr_rnd_t) atoi (argv[3]) : MPFR_RNDN); 52 mpfr_out_str (stdout, 10, 0, x, MPFR_RNDN); 53 printf ("\n"); 54 goto clear_and_exit; 55 } 56 57 mpfr_set_prec (x, 33); 58 mpfr_set_prec (y, 33); 59 mpfr_zeta_ui (x, 3, MPFR_RNDZ); 60 mpfr_set_str_binary (y, "0.100110011101110100000000001001111E1"); 61 if (mpfr_cmp (x, y)) 62 { 63 printf ("Error for zeta(3), prec=33, MPFR_RNDZ\n"); 64 printf ("expected "); mpfr_dump (y); 65 printf ("got "); mpfr_dump (x); 66 exit (1); 67 } 68 69 for (prec = MPFR_PREC_MIN; prec <= 100; prec++) 70 { 71 mpfr_set_prec (x, prec); 72 mpfr_set_prec (z, prec); 73 mpfr_set_prec (t, prec); 74 yprec = prec + 10; 75 mpfr_set_prec (y, yprec); 76 77 for (n = 0; n < 50; n++) 78 for (rnd = 0; rnd < MPFR_RND_MAX; rnd++) 79 { 80 inexact = mpfr_zeta_ui (y, n, MPFR_RNDN); 81 if (mpfr_can_round (y, yprec, MPFR_RNDN, MPFR_RNDZ, prec 82 + (rnd == MPFR_RNDN))) 83 { 84 mpfr_set (t, y, (mpfr_rnd_t) rnd); 85 inexact = mpfr_zeta_ui (z, n, (mpfr_rnd_t) rnd); 86 if (mpfr_cmp (t, z)) 87 { 88 printf ("results differ for n=%lu", n); 89 printf (" prec=%u rnd_mode=%s\n", prec, 90 mpfr_print_rnd_mode ((mpfr_rnd_t) rnd)); 91 printf (" got "); 92 mpfr_dump (z); 93 printf (" expected "); 94 mpfr_dump (t); 95 printf (" approx "); 96 mpfr_dump (y); 97 exit (1); 98 } 99 } 100 } 101 } 102 103 clear_and_exit: 104 mpfr_clear (x); 105 mpfr_clear (y); 106 mpfr_clear (z); 107 mpfr_clear (t); 108 109 tests_end_mpfr (); 110 #endif 111 return 0; 112 } 113