Annotation of OpenXM/src/kan96xx/gmp-2.0.2/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: }
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