--- /dev/null
+/* mpq_set_num(dest,num) -- Set the numerator of DEST from NUM.
+
+Copyright 1991, 1994, 1995, 2001 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"
+#include "gmp-impl.h"
+
+void
+mpq_set_num (MP_RAT *dest, const MP_INT *num)
+{
+ mp_size_t size = num->_mp_size;
+ mp_size_t abs_size = ABS (size);
+
+ if (dest->_mp_num._mp_alloc < abs_size)
+ _mpz_realloc (&(dest->_mp_num), abs_size);
+
+ MPN_COPY (dest->_mp_num._mp_d, num->_mp_d, abs_size);
+ dest->_mp_num._mp_size = size;
+}