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/set_si.c b/third_party/gmp/mpz/set_si.c
new file mode 100644
index 0000000..973aef8
--- /dev/null
+++ b/third_party/gmp/mpz/set_si.c
@@ -0,0 +1,55 @@
+/* mpz_set_si(dest,val) -- Assign DEST with a small value VAL.
+
+Copyright 1991, 1993-1995, 2000-2002, 2012, 2015 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_set_si (mpz_ptr dest, signed long int val)
+{
+ mp_size_t size;
+ mp_limb_t vl;
+
+ vl = (mp_limb_t) ABS_CAST (unsigned long int, val);
+
+ MPZ_NEWALLOC (dest, 1)[0] = vl & GMP_NUMB_MASK;
+ size = vl != 0;
+
+#if GMP_NAIL_BITS != 0
+ if (vl > GMP_NUMB_MAX)
+ {
+ MPZ_REALLOC (dest, 2);
+ PTR (dest)[1] = vl >> GMP_NUMB_BITS;
+ size = 2;
+ }
+#endif
+
+ SIZ (dest) = val >= 0 ? size : -size;
+}