Return to mtox.c CVS log

Up to [local] / OpenXM_contrib / gmp / mpbsd

Annotation of OpenXM_contrib/gmp/mpbsd/mtox.c, Revision 1.1.1.3

1.1       maekawa     1: /* mtox -- Convert OPERAND to hexadecimal and return a malloc'ed string
                      2:    with the result of the conversion.
                      3:
1.1.1.3 ! ohara       4: Copyright 1991, 1994, 2000, 2001, 2002 Free Software Foundation, Inc.
1.1       maekawa     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
1.1.1.2   maekawa     9: it under the terms of the GNU Lesser General Public License as published by
                     10: the Free Software Foundation; either version 2.1 of the License, or (at your
1.1       maekawa    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
1.1.1.2   maekawa    15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
1.1       maekawa    16: License for more details.
                     17:
1.1.1.2   maekawa    18: You should have received a copy of the GNU Lesser General Public License
1.1       maekawa    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 "mp.h"
                     24: #include "gmp.h"
                     25: #include "gmp-impl.h"
1.1.1.3 ! ohara      26: #include "longlong.h"
1.1       maekawa    27:
                     28: char *
                     29: mtox (const MINT *x)
                     30: {
                     31:   mp_size_t xsize = x->_mp_size;
1.1.1.3 ! ohara      32:   mp_ptr    xp;
1.1       maekawa    33:   mp_size_t xsign;
                     34:   unsigned char *str, *s;
1.1.1.3 ! ohara      35:   size_t str_size, alloc_size, i;
        !            36:
1.1       maekawa    37:   xsign = xsize;
                     38:   if (xsize < 0)
                     39:     xsize = -xsize;
                     40:
1.1.1.3 ! ohara      41:   /* digits, plus '\0', plus possible '-', for an exact size */
        !            42:   xp = x->_mp_d;
        !            43:   MPN_SIZEINBASE_16 (alloc_size, xp, xsize);
        !            44:   alloc_size += 1 + (xsign < 0);
        !            45:
        !            46:   str = (unsigned char *) (*__gmp_allocate_func) (alloc_size);
1.1       maekawa    47:   s = str;
                     48:
                     49:   if (xsign < 0)
                     50:     *s++ = '-';
                     51:
                     52:   str_size = mpn_get_str (s, 16, xp, xsize);
1.1.1.3 ! ohara      53:   ASSERT (str_size <= alloc_size - (xsign < 0));
        !            54:   ASSERT (str_size == 1 || *s != 0);
1.1       maekawa    55:
                     56:   for (i = 0; i < str_size; i++)
1.1.1.3 ! ohara      57:     s[i] = "0123456789abcdef"[s[i]];
1.1       maekawa    58:   s[str_size] = 0;
                     59:
1.1.1.3 ! ohara      60:   ASSERT (strlen (str) + 1 == alloc_size);
1.1.1.2   maekawa    61:   return (char *) str;
1.1       maekawa    62: }