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/mpz/dive_ui.c b/third_party/gmp/mpz/dive_ui.c
new file mode 100644
index 0000000..c859b96
--- /dev/null
+++ b/third_party/gmp/mpz/dive_ui.c
@@ -0,0 +1,68 @@
+/* mpz_divexact_ui -- exact division mpz by ulong.
+
+Copyright 2001, 2002, 2012 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
+mpz_divexact_ui (mpz_ptr dst, mpz_srcptr src, unsigned long divisor)
+{
+ mp_size_t size, abs_size;
+ mp_ptr dst_ptr;
+
+ if (UNLIKELY (divisor == 0))
+ DIVIDE_BY_ZERO;
+
+ /* For nails don't try to be clever if d is bigger than a limb, just fake
+ up an mpz_t and go to the main mpz_divexact. */
+ if (divisor > GMP_NUMB_MAX)
+ {
+ mp_limb_t dlimbs[2];
+ mpz_t dz;
+ ALLOC(dz) = 2;
+ PTR(dz) = dlimbs;
+ mpz_set_ui (dz, divisor);
+ mpz_divexact (dst, src, dz);
+ return;
+ }
+
+ size = SIZ(src);
+ if (size == 0)
+ {
+ SIZ(dst) = 0;
+ return;
+ }
+ abs_size = ABS (size);
+
+ dst_ptr = MPZ_REALLOC (dst, abs_size);
+
+ MPN_DIVREM_OR_DIVEXACT_1 (dst_ptr, PTR(src), abs_size, (mp_limb_t) divisor);
+ abs_size -= (dst_ptr[abs_size-1] == 0);
+ SIZ(dst) = (size >= 0 ? abs_size : -abs_size);
+}