--- /dev/null
+/* _mpq_cmp_si -- compare mpq and long/ulong fraction.
+
+Copyright 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"
+
+
+/* Something like mpq_cmpabs_ui would be more useful for the neg/neg case,
+ and perhaps a version accepting a parameter to reverse the test, to make
+ it a tail call here. */
+
+int
+_mpq_cmp_si (mpq_srcptr q, long n, unsigned long d)
+{
+ /* need canonical sign to get right result */
+ ASSERT (q->_mp_den._mp_size > 0);
+
+ if (q->_mp_num._mp_size >= 0)
+ {
+ if (n >= 0)
+ return _mpq_cmp_ui (q, n, d); /* >=0 cmp >=0 */
+ else
+ return 1; /* >=0 cmp <0 */
+ }
+ else
+ {
+ if (n >= 0)
+ return -1; /* <0 cmp >=0 */
+ else
+ {
+ mpq_t qabs;
+ qabs->_mp_num._mp_size = ABS (q->_mp_num._mp_size);
+ qabs->_mp_num._mp_d = q->_mp_num._mp_d;
+ qabs->_mp_den._mp_size = q->_mp_den._mp_size;
+ qabs->_mp_den._mp_d = q->_mp_den._mp_d;
+
+ return - _mpq_cmp_ui (qabs, -n, d); /* <0 cmp <0 */
+ }
+ }
+}