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/* mpz_inp_raw -- Input a MP_INT in raw, but endianess, and wordsize
independent format (as output by mpz_out_raw).
Copyright (C) 1991, 1992 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 General Public License as published by
the Free Software Foundation; either version 2, 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with the GNU MP Library; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#include "gmp.h"
#include "gmp-impl.h"
void
#ifdef __STDC__
mpz_inp_raw (MP_INT *x, FILE *file)
#else
mpz_inp_raw (x, file)
MP_INT *x;
FILE *file;
#endif
{
int i;
mp_size s;
mp_size xsize;
mp_ptr xp;
unsigned int c;
mp_limb x_digit;
mp_size x_index;
xsize = 0;
for (i = 4 - 1; i >= 0; i--)
{
c = fgetc (file);
xsize = (xsize << BITS_PER_CHAR) | c;
}
/* ??? Sign extend xsize for non-32 bit machines? */
x_index = (ABS (xsize) + BYTES_PER_MP_LIMB - 1) / BYTES_PER_MP_LIMB - 1;
if (x->alloc < x_index)
_mpz_realloc (x, x_index);
xp = x->d;
x->size = xsize / BYTES_PER_MP_LIMB;
x_digit = 0;
for (s = ABS (xsize) - 1; s >= 0; s--)
{
i = s % BYTES_PER_MP_LIMB;
c = fgetc (file);
x_digit = (x_digit << BITS_PER_CHAR) | c;
if (i == 0)
{
xp[x_index--] = x_digit;
x_digit = 0;
}
}
}
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