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/spinner.c b/third_party/gmp/tests/spinner.c
new file mode 100644
index 0000000..04e5b99
--- /dev/null
+++ b/third_party/gmp/tests/spinner.c
@@ -0,0 +1,128 @@
+/* A stupid little spinning wheel designed to make it look like useful work
+ is being done.
+
+Copyright 1999-2001 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 "config.h"
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if HAVE_UNISTD_H
+#include <unistd.h> /* for isatty */
+#endif
+
+#include "gmp-impl.h"
+
+#include "tests.h"
+
+
+/* "alarm" is not available on mingw32, and the SIGALRM constant is not
+ defined. Don't bother with a spinner in this case. */
+#if ! HAVE_ALARM || ! defined (SIGALRM)
+#define alarm(n) abort()
+#define signal(sig,func) SIG_ERR
+#endif
+
+
+/* An application can update this to get a count printed with the spinner.
+ If left at 0, no count is printed. */
+
+unsigned long spinner_count = 0;
+
+
+int spinner_wanted = -1; /* -1 uninitialized, 1 wanted, 0 not */
+int spinner_tick = 1; /* 1 ready to print, 0 not */
+
+
+/*ARGSUSED*/
+RETSIGTYPE
+spinner_signal (int signum)
+{
+ spinner_tick = 1;
+
+ if (signal (SIGALRM, spinner_signal) == SIG_ERR)
+ {
+ printf ("spinner_signal(): Oops, cannot reinstall SIGALRM\n");
+ abort ();
+ }
+ alarm (1);
+}
+
+
+/* Initialize the spinner.
+
+ This is done the first time spinner() is called, so an application
+ doesn't need to call this directly.
+
+ The spinner is only wanted if the output is a tty. */
+
+#define SPINNER_WANTED_INIT() \
+ if (spinner_wanted < 0) spinner_init ()
+
+void
+spinner_init (void)
+{
+ spinner_wanted = isatty (fileno (stdout));
+ if (spinner_wanted == -1)
+ abort ();
+
+ if (!spinner_wanted)
+ return;
+
+ if (signal (SIGALRM, spinner_signal) == SIG_ERR)
+ {
+ printf ("(no spinner)\r");
+ spinner_tick = 0;
+ return;
+ }
+ alarm (1);
+
+ /* unbuffered output so the spinner will show up */
+ setbuf (stdout, NULL);
+}
+
+
+void
+spinner (void)
+{
+ static const char data[] = { '|', '/', '-', '\\' };
+ static int pos = 0;
+
+ char buf[128];
+
+ SPINNER_WANTED_INIT ();
+
+ if (spinner_tick)
+ {
+ buf[0] = data[pos];
+ pos = (pos + 1) % numberof (data);
+ spinner_tick = 0;
+
+ if (spinner_count != 0)
+ {
+ sprintf (buf+1, " %lu\r", spinner_count);
+ }
+ else
+ {
+ buf[1] = '\r';
+ buf[2] = '\0';
+ }
+ fputs (buf, stdout);
+ }
+}