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/tests/cxx/t-cast.cc b/third_party/gmp/tests/cxx/t-cast.cc
new file mode 100644
index 0000000..983b3b8
--- /dev/null
+++ b/third_party/gmp/tests/cxx/t-cast.cc
@@ -0,0 +1,56 @@
+/* Test g++ -Wold-style-cast cleanliness.
+
+Copyright 2003 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 3 of the License,
+or (at your option) any later version.
+
+The GNU MP Library test suite 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 a copy of the GNU General Public License along with
+the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
+
+#include "gmpxx.h"
+
+
+/* This code doesn't do anything when run, it just expands various C macros
+ to see that they don't trigger compile-time warnings from g++
+ -Wold-style-cast. This option isn't used in a normal build, it has to be
+ added manually to make this test worthwhile. */
+
+void
+check_macros (void)
+{
+ mpz_t z;
+ long l = 123;
+ unsigned long u = 456;
+ int i;
+ mp_limb_t limb;
+
+ mpz_init_set_ui (z, 0L);
+ i = mpz_odd_p (z);
+ i = mpz_even_p (z);
+ i = mpz_cmp_si (z, l);
+ i = mpz_cmp_ui (z, u);
+ mpz_clear (z);
+
+ limb = GMP_NUMB_MASK;
+ limb = GMP_NUMB_MAX;
+ limb = GMP_NAIL_MASK;
+
+ mpn_divmod (&limb, &limb, 1, &limb, 1);
+ mpn_divexact_by3 (&limb, &limb, 1);
+}
+
+int
+main (void)
+{
+ return 0;
+}