diff options
Diffstat (limited to 'contrib/libgmp/mpbsd/mtox.c')
-rw-r--r-- | contrib/libgmp/mpbsd/mtox.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/contrib/libgmp/mpbsd/mtox.c b/contrib/libgmp/mpbsd/mtox.c new file mode 100644 index 0000000..8baec2a --- /dev/null +++ b/contrib/libgmp/mpbsd/mtox.c @@ -0,0 +1,81 @@ +/* mtox -- Convert OPERAND to hexadecimal and return a malloc'ed string + with the result of the conversion. + +Copyright (C) 1991, 1994 Free Software Foundation, Inc. + +This file is part of the GNU MP Library. + +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Library General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at your +option) any later version. + +The GNU MP Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public +License for more details. + +You should have received a copy of the GNU Library General Public License +along with the GNU MP Library; see the file COPYING.LIB. If not, write to +the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +MA 02111-1307, USA. */ + +#include "mp.h" +#include "gmp.h" +#include "gmp-impl.h" + +char * +#if __STDC__ +mtox (const MINT *x) +#else +mtox (x) + const MINT *x; +#endif +{ + mp_ptr xp; + mp_size_t xsize = x->_mp_size; + mp_size_t xsign; + unsigned char *str, *s; + size_t str_size, i; + int zeros; + char *num_to_text; + TMP_DECL (marker); + + if (xsize == 0) + { + str = (unsigned char *) (*_mp_allocate_func) (2); + str[0] = '0'; + str[1] = 0; + return str; + } + xsign = xsize; + if (xsize < 0) + xsize = -xsize; + + TMP_MARK (marker); + str_size = ((size_t) (xsize * BITS_PER_MP_LIMB + * __mp_bases[16].chars_per_bit_exactly)) + 3; + str = (unsigned char *) (*_mp_allocate_func) (str_size); + s = str; + + if (xsign < 0) + *s++ = '-'; + + /* Move the number to convert into temporary space, since mpn_get_str + clobbers its argument + needs one extra high limb.... */ + xp = (mp_ptr) TMP_ALLOC ((xsize + 1) * BYTES_PER_MP_LIMB); + MPN_COPY (xp, x->_mp_d, xsize); + + str_size = mpn_get_str (s, 16, xp, xsize); + + /* mpn_get_str might make some leading zeros. Skip them. */ + for (zeros = 0; s[zeros] == 0; zeros++) + str_size--; + + /* Translate to printable chars and move string down. */ + for (i = 0; i < str_size; i++) + s[i] = "0123456789abcdef"[s[zeros + i]]; + s[str_size] = 0; + + return str; +} |