applib/sdnv-c.h
changeset 0 2b3e5ec03512
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/applib/sdnv-c.h	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,50 @@
+/*
+ *    Copyright 2006 Intel Corporation
+ * 
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#ifndef _SDNV_C_H_
+#define _SDNV_C_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+#include <sys/types.h>
+
+/**
+ * Return the number of bytes needed to encode the given value.
+ */
+extern size_t sdnv_encoding_len(u_int64_t val);
+
+/**
+ * Convert the given 64-bit integer into an SDNV.
+ *
+ * @return The number of bytes used, or -1 on error.
+ */
+extern int sdnv_encode(u_int64_t val, u_char* bp, size_t len);
+
+/**
+ * Convert an SDNV pointed to by bp into a unsigned 64-bit
+ * integer.
+ *
+ * @return The number of bytes of bp consumed, or -1 on error.
+ */
+extern int sdnv_decode(const u_char* bp, size_t len, u_int64_t* val);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SDNV_C_H_ */