Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/gmp-source/demos/expr/exprv.c

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+/* 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;
+}