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/*
Copyright (C) 2014 Fredrik Johansson
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "arf.h"
#include "mpn_extras.h"
int
arf_mul_rnd_any(arf_ptr z, arf_srcptr x, arf_srcptr y,
slong prec, arf_rnd_t rnd)
{
slong xn, yn;
slong fix;
int sgnbit, inexact;
xn = ARF_XSIZE(x);
yn = ARF_XSIZE(y);
sgnbit = (xn ^ yn) & 1;
xn >>= 1;
yn >>= 1;
if (yn > xn)
{
FLINT_SWAP(arf_srcptr, x, y);
FLINT_SWAP(slong, xn, yn);
}
/* Either operand is a special value. */
if (yn == 0)
{
arf_mul_special(z, x, y);
return 0;
}
else
{
slong zn, alloc;
nn_srcptr xptr, yptr;
nn_ptr tmp;
ARF_MUL_TMP_DECL
ARF_GET_MPN_READONLY(xptr, xn, x);
ARF_GET_MPN_READONLY(yptr, yn, y);
alloc = zn = xn + yn;
ARF_MUL_TMP_ALLOC(tmp, alloc)
FLINT_MPN_MUL_WITH_SPECIAL_CASES(tmp, xptr, xn, yptr, yn);
inexact = _arf_set_round_mpn(z, &fix, tmp, zn, sgnbit, prec, rnd);
_fmpz_add2_fast(ARF_EXPREF(z), ARF_EXPREF(x), ARF_EXPREF(y), fix);
ARF_MUL_TMP_FREE(tmp, alloc)
return inexact;
}
}