1 /* mtox -- Convert OPERAND to hexadecimal and return a malloc'ed string
2 with the result of the conversion.
4 Copyright 1991, 1994, 2000, 2001, 2002 Free Software Foundation, Inc.
6 This file is part of the GNU MP Library.
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
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 Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
30 mp_size_t xsize = x->_mp_size;
33 unsigned char *str, *s;
34 size_t str_size, alloc_size, i;
40 /* digits, plus '\0', plus possible '-', for an exact size */
42 MPN_SIZEINBASE_16 (alloc_size, xp, xsize);
43 alloc_size += 1 + (xsign < 0);
45 str = (unsigned char *) (*__gmp_allocate_func) (alloc_size);
51 str_size = mpn_get_str (s, 16, xp, xsize);
52 ASSERT (str_size <= alloc_size - (xsign < 0));
53 ASSERT (str_size == 1 || *s != 0);
55 for (i = 0; i < str_size; i++)
56 s[i] = "0123456789abcdef"[s[i]];
59 ASSERT (strlen (str) + 1 == alloc_size);