| /* Test file for mpfr_out_str. |
| |
| Copyright 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| Contributed by the Arenaire and Cacao 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 2.1 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.LIB. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #include <float.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "mpfr-test.h" |
| |
| FILE *fout; |
| |
| #define check(d,r,b) check4(d,r,b,53) |
| |
| static void |
| check4 (double d, mp_rnd_t rnd, int base, int prec) |
| { |
| mpfr_t x; |
| |
| mpfr_init2 (x, prec); |
| mpfr_set_d (x, d, rnd); |
| fprintf (fout, "%1.19e base %d rnd %d:\n ", d, base, rnd); |
| mpfr_out_str (fout, base, (base == 2) ? prec : 0, x, rnd); |
| fputc ('\n', fout); |
| mpfr_clear (x); |
| } |
| |
| static void |
| special (void) |
| { |
| mpfr_t x; |
| |
| mpfr_init (x); |
| |
| mpfr_set_nan (x); |
| mpfr_out_str (fout, 10, 0, x, GMP_RNDN); |
| |
| mpfr_set_inf (x, 1); |
| mpfr_out_str (fout, 10, 0, x, GMP_RNDN); |
| |
| mpfr_set_inf (x, -1); |
| mpfr_out_str (fout, 10, 0, x, GMP_RNDN); |
| |
| mpfr_set_ui (x, 0, GMP_RNDN); |
| mpfr_out_str (fout, 10, 0, x, GMP_RNDN); |
| mpfr_neg (x, x, GMP_RNDN); |
| mpfr_out_str (fout, 10, 0, x, GMP_RNDN); |
| |
| mpfr_clear (x); |
| } |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| int i, N=10000, p; |
| mp_rnd_t rnd; |
| double d; |
| |
| tests_start_mpfr (); |
| |
| /* with no argument: prints to /dev/null, |
| tout_str N: prints N tests to stdout */ |
| if (argc == 1) |
| { |
| fout = fopen ("/dev/null", "w"); |
| /* If we failed to open this device, try with a dummy file */ |
| if (fout == NULL) |
| fout = fopen ("mpfrtest.txt", "w"); |
| } |
| else |
| { |
| fout = stdout; |
| N = atoi (argv[1]); |
| } |
| |
| if (fout == NULL) |
| { |
| printf ("Can't open /dev/null or stdout\n"); |
| exit (1); |
| } |
| |
| special (); |
| |
| check (-1.37247529013405550000e+15, GMP_RNDN, 7); |
| check (-1.5674376729569697500e+15, GMP_RNDN, 19); |
| check (-5.71262771772792640000e-79, GMP_RNDU, 16); |
| check (DBL_NEG_ZERO, GMP_RNDU, 7); |
| check (-4.5306392613572974756e-308, GMP_RNDN, 8); |
| check (-6.7265890111403371523e-165, GMP_RNDN, 4); |
| check (-1.3242553591261807653e+156, GMP_RNDN, 16); |
| check (-6.606499965302424244461355e233, GMP_RNDN, 10); |
| check4 (1.0, GMP_RNDN, 10, 120); |
| check (1.0, GMP_RNDU, 10); |
| check (4.059650008e-83, GMP_RNDN, 10); |
| check (-7.4, GMP_RNDN, 10); |
| check (0.997, GMP_RNDN, 10); |
| check (-4.53063926135729747564e-308, GMP_RNDN, 10); |
| check (2.14478198760196000000e+16, GMP_RNDN, 10); |
| check (7.02293374921793516813e-84, GMP_RNDN, 10); |
| |
| /* random tests */ |
| for (i=0;i<N;i++) |
| { |
| do |
| { |
| d = DBL_RAND (); |
| } |
| #ifdef HAVE_DENORMS |
| while (0); |
| #else |
| while (ABS(d) < DBL_MIN); |
| #endif |
| rnd = RND_RAND (); |
| p = 2 + randlimb () % 35; |
| check (d, rnd, p); |
| } |
| |
| fclose (fout); |
| |
| tests_end_mpfr (); |
| return 0; |
| } |