IN: Identifier of packet table to which packets should be appended.
IN: Number of packets to be appended.
const void * data
IN: Buffer holding data to write.
H5PTappend writes nrecords packets to the end of a packet table specified by table_id. data is a buffer containing the data to be written. For a packet table holding fixed-length packets, this data should be in the packet table's datatype. For a variable-length packet table, the data should be in the form of hvl_t structs.
Returns a non-negative value if successful, otherwise returns a negative value.