--- /dev/null
+/* zdiv_round() -- divide integers, round to nearest */
+
+/*
+Copyright 1999 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 Lesser 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 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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
+
+#include "gmp.h"
+
+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;
+}