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/mpn/generic/bsqrt.c b/third_party/gmp/mpn/generic/bsqrt.c
new file mode 100644
index 0000000..27184f0
--- /dev/null
+++ b/third_party/gmp/mpn/generic/bsqrt.c
@@ -0,0 +1,47 @@
+/* mpn_bsqrt, a^{1/2} (mod 2^n).
+
+Copyright 2009, 2010, 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
+mpn_bsqrt (mp_ptr rp, mp_srcptr ap, mp_bitcnt_t nb, mp_ptr tp)
+{
+ mp_ptr sp;
+ mp_size_t n;
+
+ ASSERT (nb > 0);
+
+ n = nb / GMP_NUMB_BITS;
+ sp = tp + n;
+
+ mpn_bsqrtinv (tp, ap, nb, sp);
+ mpn_mullo_n (rp, tp, ap, n);
+}