Annotation of OpenXM_contrib/gmp/mpfr/tests/tout_str.c, Revision 1.1
1.1 ! ohara 1: /* Test file for mpfr_out_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 <float.h>
! 24: #include <stdio.h>
! 25: #include <stdlib.h>
! 26: #include <string.h>
! 27: #include <time.h>
! 28: #include "gmp.h"
! 29: #include "mpfr.h"
! 30: #include "mpfr-test.h"
! 31:
! 32: FILE *fout;
! 33:
! 34: #define check(d,r,b) check4(d,r,b,53)
! 35:
! 36: void check4 _PROTO((double, mp_rnd_t, int, int));
! 37: void check_large _PROTO((void));
! 38:
! 39: void
! 40: check4(double d, mp_rnd_t rnd, int base, int prec)
! 41: {
! 42: mpfr_t x;
! 43:
! 44: mpfr_init2(x, prec);
! 45: mpfr_set_d(x, d, rnd);
! 46: fprintf(fout, "%1.19e base %d rnd %d:\n ", d, base, rnd);
! 47: mpfr_out_str(fout, base, (base==2) ? prec : 0, x, rnd);
! 48: fputc('\n', fout);
! 49: mpfr_clear(x);
! 50: }
! 51:
! 52: void
! 53: check_large (void)
! 54: {
! 55: mpfr_t x; mp_exp_t e; char *s;
! 56:
! 57: mpfr_init(x);
! 58:
! 59: mpfr_set_prec (x, 7);
! 60: mpfr_set_str_raw (x, "0.1010101E10");
! 61: s = mpfr_get_str (NULL, &e, 10, 2, x, GMP_RNDU);
! 62: free (s);
! 63:
! 64: /* checks rounding of negative numbers */
! 65: mpfr_set_prec (x, 7);
! 66: mpfr_set_d (x, -11.5, GMP_RNDN);
! 67: s = mpfr_get_str (NULL, &e, 10, 2, x, GMP_RNDD);
! 68: if (strcmp (s, "-12"))
! 69: {
! 70: fprintf (stderr, "Error in mpfr_get_str for x=-11.5 and rnd=GMP_RNDD\n");
! 71: free (s);
! 72: mpfr_clear (x);
! 73: exit (1);
! 74: }
! 75: free (s);
! 76:
! 77: s = mpfr_get_str (NULL, &e, 10, 2, x, GMP_RNDU);
! 78: if (strcmp (s, "-11"))
! 79: {
! 80: fprintf (stderr, "Error in mpfr_get_str for x=-11.5 and rnd=GMP_RNDU\n");
! 81: free (s);
! 82: mpfr_clear (x);
! 83: exit (1);
! 84: }
! 85: free (s);
! 86:
! 87: /* bug found by Jean-Pierre Merlet, produced error in mpfr_get_str */
! 88: mpfr_set_prec (x, 128);
! 89: mpfr_set_str_raw (x, "0.10111001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011010E3");
! 90: s = mpfr_get_str (NULL, &e, 10, 0, x, GMP_RNDU);
! 91: free (s);
! 92:
! 93: mpfr_set_prec (x, 381);
! 94: mpfr_set_str_raw (x, "0.111111111111111111111111111111111111111111111111111111111111111111101110110000100110011101101101001010111000101111000100100011110101010110101110100000010100001000110100000100011111001000010010000010001010111001011110000001110010111101100001111000101101100000010110000101100100000101010110010110001010100111001111100011100101100000100100111001100010010011110011011010110000001000010");
! 95: s = mpfr_get_str (NULL, &e, 10, 0, x, GMP_RNDD);
! 96: if (e != 0)
! 97: {
! 98: fprintf (stderr, "Error in mpfr_get_str for x=0.999999..., exponent is %d instead of 0\n", (int) e);
! 99: exit (1);
! 100: }
! 101: free (s);
! 102:
! 103: mpfr_clear (x);
! 104: }
! 105:
! 106: int
! 107: main (int argc, char *argv[])
! 108: {
! 109: int i,N=10000,r,p; double d;
! 110:
! 111: check_large();
! 112: /* with no argument: prints to /dev/null,
! 113: tout_str N: prints N tests to stdout */
! 114: if (argc==1) fout=fopen("/dev/null", "w");
! 115: else { fout=stdout; N=atoi(argv[1]); }
! 116: check(-1.37247529013405550000e+15, GMP_RNDN, 7);
! 117: check(-1.5674376729569697500e+15, GMP_RNDN, 19);
! 118: check(-5.71262771772792640000e-79, GMP_RNDU, 16);
! 119: check(-0.0, GMP_RNDU, 7);
! 120: check(-4.5306392613572974756e-308, GMP_RNDN, 8);
! 121: check(-6.7265890111403371523e-165, GMP_RNDN, 4);
! 122: check(-1.3242553591261807653e+156, GMP_RNDN, 16);
! 123: check(-6.606499965302424244461355e233, GMP_RNDN, 10);
! 124: check4(1.0, GMP_RNDN, 10, 120);
! 125: check(1.0, GMP_RNDU, 10);
! 126: check(4.059650008e-83, GMP_RNDN, 10);
! 127: check(-7.4, GMP_RNDN, 10);
! 128: check(0.997, GMP_RNDN, 10);
! 129: check(-4.53063926135729747564e-308, GMP_RNDN, 10);
! 130: check(2.14478198760196000000e+16, GMP_RNDN, 10);
! 131: check(7.02293374921793516813e-84, GMP_RNDN, 10);
! 132:
! 133: /* random tests */
! 134: SEED_RAND (time(NULL));
! 135: for (i=0;i<N;i++)
! 136: {
! 137: do
! 138: {
! 139: d = drand ();
! 140: }
! 141: #ifdef HAVE_DENORMS
! 142: while (0);
! 143: #else
! 144: while (ABS(d) < DBL_MIN);
! 145: #endif
! 146: r = LONG_RAND() % 4;
! 147: p = 2 + LONG_RAND() % 35;
! 148: check (d, r, p);
! 149: }
! 150:
! 151: return 0;
! 152: }
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