Routines (alphabetical) > Routines: H > HDF5 Routines > H5T_CLOSE

# H5T_CLOSE

The H5T_CLOSE procedure releases the specified datatype’s identifier and releases resources used by it. After this routine is used, the datatype’s identifier is no longer available until the H5T_OPEN routine is used again to specify that datatype.

## Syntax

H5T_CLOSE, Datatype_id

## Arguments

### Datatype_id

An integer representing the datatype’s identifier to be closed.

## Keywords

None

## Version History

5.6 | Introduced

## See Also

H5T_OPEN