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/scanf/sscanffuns.c b/third_party/gmp/scanf/sscanffuns.c
new file mode 100644
index 0000000..3ee6b63
--- /dev/null
+++ b/third_party/gmp/scanf/sscanffuns.c
@@ -0,0 +1,123 @@
+/* __gmp_sscanf_funs -- support for formatted input from a string.
+
+ THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY. THEY'RE ALMOST
+ CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
+ FUTURE GNU MP RELEASES.
+
+Copyright 2001-2003, 2009 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 <stdio.h>
+#include <stdarg.h>
+#include "gmp-impl.h"
+
+
+#if 0
+static int
+scan (const char **sp, const char *fmt, ...)
+{
+ va_list ap;
+ int ret;
+
+ va_start(ap, fmt);
+ ret = vsscanf(*sp, fmt, ap);
+ va_end(ap);
+
+ return ret;
+}
+#else
+static int
+scan (const char **sp, const char *fmt, ...)
+{
+ va_list ap;
+ void *p1, *p2;
+ int ret;
+
+ va_start (ap, fmt);
+ p1 = va_arg (ap, void *);
+ p2 = va_arg (ap, void *);
+
+ ret = sscanf (*sp, fmt, p1, p2);
+
+ va_end (ap);
+
+ return ret;
+}
+#endif
+
+static void
+step (const char **sp, int n)
+{
+ ASSERT (n >= 0);
+
+ /* shouldn't push us past the end of the string */
+#if WANT_ASSERT
+ {
+ int i;
+ for (i = 0; i < n; i++)
+ ASSERT ((*sp)[i] != '\0');
+ }
+#endif
+
+ (*sp) += n;
+}
+
+static int
+get (const char **sp)
+{
+ const char *s;
+ int c;
+ s = *sp;
+ c = (unsigned char) *s++;
+ if (c == '\0')
+ return EOF;
+ *sp = s;
+ return c;
+}
+
+static void
+unget (int c, const char **sp)
+{
+ const char *s;
+ s = *sp;
+ if (c == EOF)
+ {
+ ASSERT (*s == '\0');
+ return;
+ }
+ s--;
+ ASSERT ((unsigned char) *s == c);
+ *sp = s;
+}
+
+const struct gmp_doscan_funs_t __gmp_sscanf_funs = {
+ (gmp_doscan_scan_t) scan,
+ (gmp_doscan_step_t) step,
+ (gmp_doscan_get_t) get,
+ (gmp_doscan_unget_t) unget,
+};