/* zdiv_round() -- divide integers, round to nearest */
/*
Copyright 1999 Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite 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 3 of the License,
or (at your option) any later version.
The GNU MP Library test suite 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 test suite. If not, see https://www.gnu.org/licenses/. */
void
zdiv_round (mpz_t rop, mpz_t n, mpz_t d)
{
mpf_t f_n, f_d;
mpf_init (f_n);
mpf_init (f_d);
mpf_set_z (f_d, d);
mpf_set_z (f_n, n);
mpf_div (f_n, f_n, f_d);
mpf_set_d (f_d, .5);
if (mpf_sgn (f_n) < 0)
mpf_neg (f_d, f_d);
mpf_add (f_n, f_n, f_d);
mpz_set_f (rop, f_n);
mpf_clear (f_n);
mpf_clear (f_d);
return;
}