Return to out_str.c CVS log

Up to [local] / OpenXM_contrib / gmp / mpf

Annotation of OpenXM_contrib/gmp/mpf/out_str.c, Revision 1.1.1.3

1.1       maekawa     1: /* mpf_out_str (stream, base, n_digits, op) -- Print N_DIGITS digits from
                      2:    the float OP to STREAM in base BASE.  Return the number of characters
                      3:    written, or 0 if an error occurred.
                      4:
1.1.1.3 ! ohara       5: Copyright 1996, 1997, 2001, 2002 Free Software Foundation, Inc.
1.1       maekawa     6:
                      7: This file is part of the GNU MP Library.
                      8:
                      9: The GNU MP Library is free software; you can redistribute it and/or modify
1.1.1.2   maekawa    10: it under the terms of the GNU Lesser General Public License as published by
                     11: the Free Software Foundation; either version 2.1 of the License, or (at your
1.1       maekawa    12: option) any later version.
                     13:
                     14: The GNU MP Library is distributed in the hope that it will be useful, but
                     15: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
1.1.1.2   maekawa    16: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
1.1       maekawa    17: License for more details.
                     18:
1.1.1.2   maekawa    19: You should have received a copy of the GNU Lesser General Public License
1.1       maekawa    20: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     21: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     22: MA 02111-1307, USA. */
                     23:
1.1.1.3 ! ohara      24: #include "config.h"
        !            25:
1.1       maekawa    26: #include <stdio.h>
1.1.1.2   maekawa    27: #include <string.h>
1.1.1.3 ! ohara      28:
        !            29: #if HAVE_LOCALE_H
        !            30: #include <locale.h>    /* for localeconv */
        !            31: #endif
        !            32:
1.1       maekawa    33: #include "gmp.h"
                     34: #include "gmp-impl.h"
                     35:
                     36: size_t
                     37: mpf_out_str (FILE *stream, int base, size_t n_digits, mpf_srcptr op)
                     38: {
                     39:   char *str;
                     40:   mp_exp_t exp;
                     41:   size_t written;
                     42:   TMP_DECL (marker);
                     43:
                     44:   TMP_MARK (marker);
                     45:
                     46:   if (base == 0)
                     47:     base = 10;
                     48:   if (n_digits == 0)
1.1.1.3 ! ohara      49:     MPF_SIGNIFICANT_DIGITS (n_digits, base, op->_mp_prec);
1.1       maekawa    50:
                     51:   if (stream == 0)
                     52:     stream = stdout;
                     53:
                     54:   str = (char *) TMP_ALLOC (n_digits + 2); /* extra for minus sign and \0 */
                     55:
                     56:   mpf_get_str (str, &exp, base, n_digits, op);
                     57:   n_digits = strlen (str);
                     58:
                     59:   written = 0;
                     60:
                     61:   /* Write sign */
                     62:   if (str[0] == '-')
                     63:     {
                     64:       str++;
                     65:       fputc ('-', stream);
                     66:       written = 1;
1.1.1.2   maekawa    67:       n_digits--;
1.1       maekawa    68:     }
                     69:
1.1.1.3 ! ohara      70: #if HAVE_LOCALECONV
        !            71:   {
        !            72:     const char  *point = localeconv()->decimal_point;
        !            73:     size_t      pointlen = strlen (point);
        !            74:     putc ('0', stream);
        !            75:     fwrite (point, 1, pointlen, stream);
        !            76:     written += pointlen + 1;
        !            77:   }
        !            78: #else
1.1       maekawa    79:   fwrite ("0.", 1, 2, stream);
                     80:   written += 2;
1.1.1.3 ! ohara      81: #endif
1.1       maekawa    82:
                     83:   /* Write mantissa */
                     84:   {
                     85:     size_t fwret;
                     86:     fwret = fwrite (str, 1, n_digits, stream);
                     87:     written += fwret;
                     88:   }
                     89:
                     90:   /* Write exponent */
                     91:   {
                     92:     int fpret;
                     93:     fpret = fprintf (stream, (base <= 10 ? "e%ld" : "@%ld"), exp);
                     94:     written += fpret;
                     95:   }
                     96:
                     97:   TMP_FREE (marker);
                     98:   return ferror (stream) ? 0 : written;
                     99: }