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/* mpf_div_ui -- Divide a float with an unsigned integer.
Copyright (C) 1993, 1994, 1996 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 "gmp.h"
#include "gmp-impl.h"
#include "longlong.h"
void
#if __STDC__
mpf_div_ui (mpf_ptr r, mpf_srcptr u, unsigned long int v)
#else
mpf_div_ui (r, u, v)
mpf_ptr r;
mpf_srcptr u;
unsigned long int v;
#endif
{
mp_srcptr up;
mp_ptr qp, rp, rrp;
mp_size_t usize = u->_mp_size;
mp_size_t qsize, rsize;
mp_size_t sign_quotient = usize;
mp_limb_t q_limb;
mp_size_t prec;
mp_exp_t rexp;
TMP_DECL (marker);
TMP_MARK (marker);
prec = r->_mp_prec;
usize = ABS (usize);
rsize = prec;
qp = r->_mp_d;
up = u->_mp_d;
rp = (mp_ptr) TMP_ALLOC ((rsize + 1) * BYTES_PER_MP_LIMB);
if (usize > rsize)
{
up += usize - rsize;
usize = rsize;
rrp = rp;
}
else
{
MPN_ZERO (rp, rsize - usize);
rrp = rp + (rsize - usize);
}
/* Move the dividend to the remainder. */
MPN_COPY (rrp, up, usize);
mpn_divmod_1 (qp, rp, rsize, v);
q_limb = qp[rsize - 1];
qsize = rsize - (q_limb == 0);
rexp = u->_mp_exp - (q_limb == 0);
r->_mp_size = sign_quotient >= 0 ? qsize : -qsize;
r->_mp_exp = rexp;
TMP_FREE (marker);
}
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