| /* Test file for mpfr_const_euler. |
| |
| Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
| Contributed by the AriC and Caramel 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" |
| |
| /* Wrapper for tgeneric */ |
| static int |
| my_const_euler (mpfr_ptr x, mpfr_srcptr y, mpfr_rnd_t r) |
| { |
| return mpfr_const_euler (x, r); |
| } |
| |
| #define RAND_FUNCTION(x) mpfr_set_ui ((x), 0, MPFR_RNDN) |
| #define TEST_FUNCTION my_const_euler |
| #include "tgeneric.c" |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| mpfr_t gamma, y, z, t; |
| unsigned int err, prec, yprec, p0 = 2, p1 = 200; |
| int rnd; |
| |
| tests_start_mpfr (); |
| |
| prec = (argc < 2) ? 53 : atoi(argv[1]); |
| |
| if (argc > 1) |
| { |
| mpfr_init2 (gamma, prec); |
| mpfr_const_euler (gamma, MPFR_RNDN); |
| printf("gamma="); mpfr_out_str (stdout, 10, 0, gamma, MPFR_RNDD); |
| puts (""); |
| mpfr_clear (gamma); |
| return 0; |
| } |
| |
| mpfr_init (y); |
| mpfr_init (z); |
| mpfr_init (t); |
| |
| mpfr_set_prec (y, 32); |
| mpfr_set_prec (z, 32); |
| (mpfr_const_euler) (y, MPFR_RNDN); |
| mpfr_set_str_binary (z, "0.10010011110001000110011111100011"); |
| if (mpfr_cmp (y, z)) |
| { |
| printf ("Error for prec=32\n"); |
| exit (1); |
| } |
| |
| for (prec = p0; prec <= p1; prec++) |
| { |
| mpfr_set_prec (z, prec); |
| mpfr_set_prec (t, prec); |
| yprec = prec + 10; |
| |
| for (rnd = 0; rnd < MPFR_RND_MAX; rnd++) |
| { |
| mpfr_set_prec (y, yprec); |
| mpfr_const_euler (y, (mpfr_rnd_t) rnd); |
| err = (rnd == MPFR_RNDN) ? yprec + 1 : yprec; |
| if (mpfr_can_round (y, err, (mpfr_rnd_t) rnd, (mpfr_rnd_t) rnd, prec)) |
| { |
| mpfr_set (t, y, (mpfr_rnd_t) rnd); |
| mpfr_const_euler (z, (mpfr_rnd_t) rnd); |
| if (mpfr_cmp (t, z)) |
| { |
| printf ("results differ for prec=%u rnd_mode=%s\n", prec, |
| mpfr_print_rnd_mode ((mpfr_rnd_t) rnd)); |
| printf (" got "); |
| mpfr_out_str (stdout, 2, prec, z, MPFR_RNDN); |
| puts (""); |
| printf (" expected "); |
| mpfr_out_str (stdout, 2, prec, t, MPFR_RNDN); |
| puts (""); |
| printf (" approximation was "); |
| mpfr_print_binary (y); |
| puts (""); |
| exit (1); |
| } |
| } |
| } |
| } |
| |
| mpfr_clear (y); |
| mpfr_clear (z); |
| mpfr_clear (t); |
| |
| test_generic (2, 200, 1); |
| |
| tests_end_mpfr (); |
| return 0; |
| } |