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/demos/expr/exprv.c b/third_party/gmp/demos/expr/exprv.c
new file mode 100644
index 0000000..c25741b
--- /dev/null
+++ b/third_party/gmp/demos/expr/exprv.c
@@ -0,0 +1,57 @@
+/* mpz expression evaluation, simple part */
+
+/*
+Copyright 2000, 2001 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 "gmp.h"
+#include "expr-impl.h"
+
+
+int
+mpexpr_va_to_var (void *var[], va_list ap)
+{
+ int i = 0;
+ void *v;
+
+ for (;;)
+ {
+ v = va_arg (ap, void *);
+ if (v == NULL)
+ break;
+ if (i >= MPEXPR_VARIABLES)
+ return MPEXPR_RESULT_BAD_VARIABLE;
+ var[i++] = v;
+ }
+
+ while (i < MPEXPR_VARIABLES)
+ var[i++] = NULL;
+
+ return MPEXPR_RESULT_OK;
+}