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Annotation of OpenXM_contrib/gmp/mpz/out_str.c, Revision 1.1

1.1     ! maekawa     1: /* mpz_out_str(stream, base, integer) -- Output to STREAM the multi prec.
        !             2:    integer INTEGER in base BASE.
        !             3:
        !             4: Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
        !             5:
        !             6: This file is part of the GNU MP Library.
        !             7:
        !             8: The GNU MP Library is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU Library General Public License as published by
        !            10: the Free Software Foundation; either version 2 of the License, or (at your
        !            11: option) any later version.
        !            12:
        !            13: The GNU MP Library is distributed in the hope that it will be useful, but
        !            14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
        !            16: License for more details.
        !            17:
        !            18: You should have received a copy of the GNU Library General Public License
        !            19: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            21: MA 02111-1307, USA. */
        !            22:
        !            23: #include <stdio.h>
        !            24: #include "gmp.h"
        !            25: #include "gmp-impl.h"
        !            26:
        !            27: size_t
        !            28: #if __STDC__
        !            29: mpz_out_str (FILE *stream, int base, mpz_srcptr x)
        !            30: #else
        !            31: mpz_out_str (stream, base, x)
        !            32:      FILE *stream;
        !            33:      int base;
        !            34:      mpz_srcptr x;
        !            35: #endif
        !            36: {
        !            37:   mp_ptr xp;
        !            38:   mp_size_t x_size = x->_mp_size;
        !            39:   unsigned char *str;
        !            40:   size_t str_size;
        !            41:   size_t i;
        !            42:   size_t written;
        !            43:   char *num_to_text;
        !            44:   TMP_DECL (marker);
        !            45:
        !            46:   if (stream == 0)
        !            47:     stream = stdout;
        !            48:
        !            49:   if (base >= 0)
        !            50:     {
        !            51:       if (base == 0)
        !            52:        base = 10;
        !            53:       num_to_text = "0123456789abcdefghijklmnopqrstuvwxyz";
        !            54:     }
        !            55:   else
        !            56:     {
        !            57:       base = -base;
        !            58:       num_to_text = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        !            59:     }
        !            60:
        !            61:   if (x_size == 0)
        !            62:     {
        !            63:       fputc ('0', stream);
        !            64:       return ferror (stream) ? 0 : 1;
        !            65:     }
        !            66:
        !            67:   written = 0;
        !            68:
        !            69:   if (x_size < 0)
        !            70:     {
        !            71:       fputc ('-', stream);
        !            72:       x_size = -x_size;
        !            73:       written = 1;
        !            74:     }
        !            75:
        !            76:   TMP_MARK (marker);
        !            77:   str_size = ((size_t) (x_size * BITS_PER_MP_LIMB
        !            78:                        * __mp_bases[base].chars_per_bit_exactly)) + 3;
        !            79:   str = (unsigned char *) TMP_ALLOC (str_size);
        !            80:
        !            81:   /* Move the number to convert into temporary space, since mpn_get_str
        !            82:      clobbers its argument + needs one extra high limb....  */
        !            83:   xp = (mp_ptr) TMP_ALLOC ((x_size + 1) * BYTES_PER_MP_LIMB);
        !            84:   MPN_COPY (xp, x->_mp_d, x_size);
        !            85:
        !            86:   str_size = mpn_get_str (str, base, xp, x_size);
        !            87:
        !            88:   /* mpn_get_str might make some leading zeros.  Skip them.  */
        !            89:   while (*str == 0)
        !            90:     {
        !            91:       str_size--;
        !            92:       str++;
        !            93:     }
        !            94:
        !            95:   /* Translate to printable chars.  */
        !            96:   for (i = 0; i < str_size; i++)
        !            97:     str[i] = num_to_text[str[i]];
        !            98:   str[str_size] = 0;
        !            99:
        !           100:   {
        !           101:     size_t fwret;
        !           102:     fwret = fwrite ((char *) str, 1, str_size, stream);
        !           103:     written += fwret;
        !           104:   }
        !           105:
        !           106:   TMP_FREE (marker);
        !           107:   return ferror (stream) ? 0 : written;
        !           108: }