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diff --git a/vendor/gmp-6.3.0/mpq/cmp_si.c b/vendor/gmp-6.3.0/mpq/cmp_si.c
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+/* _mpq_cmp_si -- compare mpq and long/ulong fraction.
+
+Copyright 2001, 2013, 2014 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 either:
+
+ * 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.
+
+or
+
+ * the GNU General Public License as published by the Free Software
+ Foundation; either version 2 of the License, or (at your option) any
+ later version.
+
+or both in parallel, as here.
+
+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 General Public License
+for more details.
+
+You should have received copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library. If not,
+see https://www.gnu.org/licenses/. */
+
+#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 (SIZ(DEN(q)) > 0);
+
+ if (n >= 0)
+ return _mpq_cmp_ui (q, n, d);
+ if (SIZ(NUM(q)) >= 0)
+ {
+ return 1; /* >=0 cmp <0 */
+ }
+ else
+ {
+ mpq_t qabs;
+ SIZ(NUM(qabs)) = -SIZ(NUM(q));
+ PTR(NUM(qabs)) = PTR(NUM(q));
+ SIZ(DEN(qabs)) = SIZ(DEN(q));
+ PTR(DEN(qabs)) = PTR(DEN(q));
+
+ return - _mpq_cmp_ui (qabs, NEG_CAST (unsigned long, n), d); /* <0 cmp <0 */
+ }
+}