H - H Advanced Interface

Happendable	Specifies that the specified element can be appended to
Hcache	Enables low-level caching for the specified file.
Hdeldd	Deletes a tag and reference number from the data descriptor list.
Hendaccess	Terminates access to a data object by disposing of the access identifier.
Hendbitaccess	Disposes of the specified bit-access file element.
Hexist	Locates an object in an HDF file.
Hfidinquire	Returns file information through a reference of its file identifier.
Hfind	Locates the next object to be searched for in an HDF file.
Hgetbit	Reads one bit from the specified bit-access element.
Hgetelement	Reads the data element for the specified tag and reference number and writes it to the data buffer.
Hinquire	Returns access information about a data element.
Hlength	Returns the length of a data object specified by the tag and reference number.
Hnewref	Returns a reference number that can be used with any tag to produce a unique tag /reference number pair.
Hnextread	Searches for the next data descriptor that matches the specified tag and reference number.
Hnumber/hnumber	Returns the number of instances of a tag in a file.
Hoffset	Returns the offset of a data element in the file.
Hputbit	Writes one bit to the specified bit-access element.
Hputelement	Writes a data element or replaces an existing data element in a HDF file.
Hread	Reads the next segment in a data element.
Hseek	Sets the access pointer to an offset within a data element.
Hsetlength	Specifies the length of a new HDF element.
Hshutdown	Deallocates buffers previously allocated in other H routines.
Htagnewref	Returns a reference number that is unique for the specified file that will correspond to the specified tag. Creates a new tag/reference number pair.
Htrunc	Truncates the data object specified by the h_id to the length trunc_len.
Hwrite	Writes the next data segment to a specified data element.