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/t-popc.c b/third_party/gmp/tests/t-popc.c
new file mode 100644
index 0000000..421d4e2
--- /dev/null
+++ b/third_party/gmp/tests/t-popc.c
@@ -0,0 +1,79 @@
+/* Test popc_limb.
+
+Copyright 2002, 2012 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 <stdio.h>
+#include <stdlib.h>
+
+#include "gmp-impl.h"
+#include "tests.h"
+
+
+int
+main (void)
+{
+ mp_limb_t src, want, got;
+ int i;
+
+ tests_start ();
+ mp_trace_base = -16;
+
+ for (i = 0; i < GMP_LIMB_BITS; i++)
+ {
+ src = CNST_LIMB(1) << i;
+ want = 1;
+
+ popc_limb (got, src);
+ if (got != want)
+ {
+ error:
+ printf ("popc_limb wrong result\n");
+ mpn_trace (" src ", &src, (mp_size_t) 1);
+ mpn_trace (" want", &want, (mp_size_t) 1);
+ mpn_trace (" got ", &got, (mp_size_t) 1);
+ abort ();
+ }
+ }
+
+ src = 0;
+ want = 0;
+ for (i = 0; i < GMP_LIMB_BITS; i++)
+ {
+ src += CNST_LIMB(1) << i;
+ want += 1;
+
+ popc_limb (got, src);
+ if (got != want)
+ {
+ goto error;
+ }
+ }
+
+ for (i = 0; i < 100; i++)
+ {
+ mpn_random2 (&src, (mp_size_t) 1);
+ want = ref_popc_limb (src);
+
+ popc_limb (got, src);
+ if (got != want)
+ goto error;
+ }
+
+ tests_end ();
+ exit (0);
+}