/* Test mpf_get_str and mpf_set_str. Copyright (C) 1996 Free Software Foundation, Inc. This file is part of the GNU MP Library. The GNU MP Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU MP 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU MP Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include "gmp.h" #include "gmp-impl.h" #include "urandom.h" #ifndef SIZE #define SIZE 10 #endif #ifndef EXPO #define EXPO 20 #endif main (argc, argv) int argc; char **argv; { mpf_t x, y; int reps = 20000; int i; mp_size_t bprec = 100; mpf_t d, rerr, max_rerr, limit_rerr; char *str; long bexp; long size, exp; int base; char buf[SIZE * BITS_PER_MP_LIMB + 5]; if (argc > 1) { reps = strtol (argv[1], 0, 0); if (argc > 2) bprec = strtol (argv[2], 0, 0); } mpf_set_default_prec (bprec); mpf_init_set_ui (limit_rerr, 1); mpf_div_2exp (limit_rerr, limit_rerr, bprec); #if VERBOSE mpf_dump (limit_rerr); #endif mpf_init (rerr); mpf_init_set_ui (max_rerr, 0); mpf_init (x); mpf_init (y); mpf_init (d); for (i = 0; i < reps; i++) { size = urandom () % (2 * SIZE) - SIZE; exp = urandom () % EXPO; mpf_random2 (x, size, exp); base = urandom () % 35 + 2; str = mpf_get_str (0, &bexp, base, 0, x); if (str[0] == '-') sprintf (buf, "-0.%s@%ld", str + 1, bexp); else sprintf (buf, "0.%s@%ld", str, bexp); mpf_set_str (y, buf, -base); free (str); mpf_reldiff (rerr, x, y); if (mpf_cmp (rerr, max_rerr) > 0) { mpf_set (max_rerr, rerr); #if VERBOSE mpf_dump (max_rerr); #endif if (mpf_cmp (rerr, limit_rerr) > 0) { printf ("ERROR after %d tests\n", i); printf ("base = %d\n", base); printf (" x = "); mpf_dump (x); printf (" y = "); mpf_dump (y); abort (); } } } exit (0); } oo (x) mpf_t x; { int i; printf (" exp = %ld\n", x->_mp_exp); printf ("size = %d\n", x->_mp_size); for (i = ABS (x->_mp_size) - 1; i >= 0; i--) printf ("%08lX ", x->_mp_d[i]); printf ("\n"); mpf_dump (x); }