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/rand/randbui.c b/third_party/gmp/rand/randbui.c
new file mode 100644
index 0000000..de9e95b
--- /dev/null
+++ b/third_party/gmp/rand/randbui.c
@@ -0,0 +1,56 @@
+/* gmp_urandomb_ui -- random bits returned in a ulong.
+
+Copyright 2003, 2004 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"
+
+
+/* Currently bits>=BITS_PER_ULONG is quietly truncated to BITS_PER_ULONG,
+ maybe this should raise an exception or something. */
+
+unsigned long
+gmp_urandomb_ui (gmp_randstate_ptr rstate, unsigned long bits)
+{
+ mp_limb_t a[LIMBS_PER_ULONG];
+
+ /* start with zeros, since if bits==0 then _gmp_rand will store nothing at
+ all, or if bits <= GMP_NUMB_BITS then it will store only a[0] */
+ a[0] = 0;
+#if LIMBS_PER_ULONG > 1
+ a[1] = 0;
+#endif
+
+ _gmp_rand (a, rstate, MIN (bits, BITS_PER_ULONG));
+
+#if LIMBS_PER_ULONG == 1
+ return a[0];
+#else
+ return a[0] | (a[1] << GMP_NUMB_BITS);
+#endif
+}