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Annotation of OpenXM_contrib/gmp/mpfr/tests/tget_str.c, Revision 1.1.1.1

1.1       ohara       1: /* Test file for mpfr_get_str.
                      2:
                      3: Copyright 1999, 2001, 2002 Free Software Foundation, Inc.
                      4:
                      5: This file is part of the MPFR Library.
                      6:
                      7: The MPFR Library is free software; you can redistribute it and/or modify
                      8: it under the terms of the GNU Lesser General Public License as published by
                      9: the Free Software Foundation; either version 2.1 of the License, or (at your
                     10: option) any later version.
                     11:
                     12: The MPFR Library is distributed in the hope that it will be useful, but
                     13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     15: License for more details.
                     16:
                     17: You should have received a copy of the GNU Lesser General Public License
                     18: along with the MPFR Library; see the file COPYING.LIB.  If not, write to
                     19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20: MA 02111-1307, USA. */
                     21:
                     22: #include <math.h>
                     23: #include <stdio.h>
                     24: #include <stdlib.h>
                     25: #include <string.h>
                     26: #include <time.h>
                     27: #include "gmp.h"
                     28: #include "mpfr.h"
                     29: #ifdef MPFR_HAVE_FESETROUND
                     30: #include "mpfr-test.h"
                     31: #endif
                     32:
                     33: void check _PROTO((double, mp_rnd_t));
                     34: void check3 _PROTO((double, mp_rnd_t, char *));
                     35: void check_small _PROTO((void));
                     36:
                     37: void
                     38: check (double d, mp_rnd_t rnd)
                     39: {
                     40:   mpfr_t x; char *str; mp_exp_t e;
                     41:
                     42:   mpfr_init2(x, 53);
                     43:   mpfr_set_d(x, d, rnd);
                     44:   str = mpfr_get_str(NULL, &e, 10, 5, x, rnd);
                     45:   mpfr_clear(x);
                     46:   free(str);
                     47: }
                     48:
                     49: void
                     50: check3 (double d, mp_rnd_t rnd, char *res)
                     51: {
                     52:   mpfr_t x; char *str; mp_exp_t e;
                     53:
                     54:   mpfr_init2 (x, 53);
                     55:   mpfr_set_d (x, d, rnd);
                     56:   str = mpfr_get_str (NULL, &e, 10, 5, x, rnd);
                     57:   if (strcmp(str, res))
                     58:     {
                     59:       fprintf (stderr, "Error in mpfr_get_str for x=%1.20e\n", d);
                     60:       fprintf (stderr, "got %s instead of %s\n", str, res);
                     61:     }
                     62:   mpfr_clear (x);
                     63:   free (str);
                     64: }
                     65:
                     66: void
                     67: check_small (void)
                     68: {
                     69:   mpfr_t x;
                     70:   char *s;
                     71:   mp_exp_t e;
                     72:
                     73:   mpfr_init(x);
                     74:
                     75:   /* problem found by Fabrice Rouillier */
                     76:   mpfr_set_prec(x, 63);
                     77:   mpfr_set_d(x, 5e14, GMP_RNDN);
                     78:   s = mpfr_get_str(NULL, &e, 10, 18, x, GMP_RNDU);
                     79:   free(s);
                     80:
                     81:   /* bug found by Johan Vervloet */
                     82:   mpfr_set_prec(x, 6);
                     83:   mpfr_set_d(x, 688.0, GMP_RNDN);
                     84:   s = mpfr_get_str(NULL, &e, 2, 4, x, GMP_RNDU);
                     85:   if (strcmp(s, "1011") || (e!=10)) {
                     86:     fprintf(stderr, "Error in mpfr_get_str: 688 printed up to 4 bits should give 1.011e9\ninstead of ");
                     87:     mpfr_out_str(stderr, 2, 4, x, GMP_RNDU); putchar('\n');
                     88:     exit(1);
                     89:   }
                     90:   free(s);
                     91:
                     92:   mpfr_set_prec (x, 38);
                     93:   mpfr_set_str_raw (x, "1.0001110111110100011010100010010100110e-6");
                     94:   s = mpfr_get_str (NULL, &e, 8, 10, x, GMP_RNDU);
                     95:   if (strcmp (s, "1073721522") || (e != -1))
                     96:     {
                     97:       fprintf (stderr, "Error in mpfr_get_str (3): s=%s e=%d\n", s, (int) e);
                     98:       exit (1);
                     99:     }
                    100:   free (s);
                    101:
                    102:   mpfr_clear(x);
                    103: }
                    104:
                    105: int
                    106: main (int argc, char *argv[])
                    107: {
                    108: #ifdef MPFR_HAVE_FESETROUND
                    109:   int i;
                    110:   double d;
                    111:
                    112:   SEED_RAND (time(NULL));
                    113:   for (i=0;i<100000;i++) {
                    114:     do { d = drand(); } while (isnan(d));
                    115:     check(d, GMP_RNDN);
                    116:   }
                    117: #endif
                    118:   check_small();
                    119:   check3(4.059650008e-83, GMP_RNDN, "40597");
                    120:   check3(-6.606499965302424244461355e233, GMP_RNDN, "-66065");
                    121:   check3(-7.4, GMP_RNDN, "-74000");
                    122:   check3(0.997, GMP_RNDN, "99700");
                    123:   check3(-4.53063926135729747564e-308, GMP_RNDN, "-45306");
                    124:   check3(2.14478198760196000000e+16, GMP_RNDN, "21448");
                    125:   check3(7.02293374921793516813e-84, GMP_RNDN, "70229");
                    126:   check3(-6.7274500420134077e-87, GMP_RNDN, "-67275");
                    127:
                    128:   return 0;
                    129: }