--- /dev/null
+/*
+ * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <NULL.h>
+
+int
+NULL_print(const asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ (void)td; /* Unused argument */
+ (void)ilevel; /* Unused argument */
+
+ if(sptr) {
+ return (cb("<present>", 9, app_key) < 0) ? -1 : 0;
+ } else {
+ return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
+ }
+}