aa9bc17601
BMakefiles and other bits will follow. Requested by: Andrey Chernov Made world by: Chuck Robey
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/* mtox -- Convert OPERAND to hexadecimal and return a malloc'ed string
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with the result of the conversion.
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Copyright (C) 1991, 1994 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include "mp.h"
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#include "gmp.h"
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#include "gmp-impl.h"
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char *
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#if __STDC__
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mtox (const MINT *x)
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#else
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mtox (x)
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const MINT *x;
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#endif
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{
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mp_ptr xp;
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mp_size_t xsize = x->_mp_size;
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mp_size_t xsign;
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unsigned char *str, *s;
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size_t str_size, i;
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int zeros;
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char *num_to_text;
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TMP_DECL (marker);
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if (xsize == 0)
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{
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str = (unsigned char *) (*_mp_allocate_func) (2);
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str[0] = '0';
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str[1] = 0;
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return str;
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}
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xsign = xsize;
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if (xsize < 0)
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xsize = -xsize;
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TMP_MARK (marker);
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str_size = ((size_t) (xsize * BITS_PER_MP_LIMB
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* __mp_bases[16].chars_per_bit_exactly)) + 3;
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str = (unsigned char *) (*_mp_allocate_func) (str_size);
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s = str;
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if (xsign < 0)
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*s++ = '-';
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/* Move the number to convert into temporary space, since mpn_get_str
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clobbers its argument + needs one extra high limb.... */
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xp = (mp_ptr) TMP_ALLOC ((xsize + 1) * BYTES_PER_MP_LIMB);
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MPN_COPY (xp, x->_mp_d, xsize);
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str_size = mpn_get_str (s, 16, xp, xsize);
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/* mpn_get_str might make some leading zeros. Skip them. */
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for (zeros = 0; s[zeros] == 0; zeros++)
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str_size--;
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/* Translate to printable chars and move string down. */
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for (i = 0; i < str_size; i++)
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s[i] = "0123456789abcdef"[s[zeros + i]];
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s[str_size] = 0;
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return str;
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}
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