Return to tget_str.c CVS log

Up to [local] / OpenXM_contrib / gmp / mpfr / tests

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