Add libgmp 6.2.0 to third_party
Don't build it yet. That will come in the next review.
Change-Id: Idf3266558165e5ab45f4a41c98cc8c838c8244d5
diff --git a/third_party/gmp/mpq/canonicalize.c b/third_party/gmp/mpq/canonicalize.c
new file mode 100644
index 0000000..cbc0a22
--- /dev/null
+++ b/third_party/gmp/mpq/canonicalize.c
@@ -0,0 +1,61 @@
+/* mpq_canonicalize(op) -- Remove common factors of the denominator and
+ numerator in OP.
+
+Copyright 1991, 1994-1996, 2000, 2001, 2005, 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"
+
+void
+mpq_canonicalize (mpq_t op)
+{
+ mpz_t gcd;
+ TMP_DECL;
+
+ if (SIZ(DEN(op)) < 0)
+ {
+ SIZ(NUM(op)) = -SIZ(NUM(op));
+ SIZ(DEN(op)) = -SIZ(DEN(op));
+ }
+ else if (UNLIKELY (SIZ(DEN(op)) == 0))
+ DIVIDE_BY_ZERO;
+
+ TMP_MARK;
+
+ /* ??? Dunno if the 1+ is needed. */
+ MPZ_TMP_INIT (gcd, 1 + MAX (ABSIZ(NUM(op)),
+ SIZ(DEN(op))));
+
+ mpz_gcd (gcd, NUM(op), DEN(op));
+ if (! MPZ_EQUAL_1_P (gcd))
+ {
+ mpz_divexact_gcd (NUM(op), NUM(op), gcd);
+ mpz_divexact_gcd (DEN(op), DEN(op), gcd);
+ }
+ TMP_FREE;
+}