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H5T_OPEN

Opens a committed (named) datatype

Signature:

hid_t H5Topen( hid_t loc_id, const char * name )
hid_t H5Topen( hid_t loc_id, const char * name, hid_t tapl_id )

Description:

H5T_OPEN is a macro that is mapped to either  H5T_OPEN1 or H5T_OPEN2, depending on the needs of the application.

Such macros are provided to facilitate application compatibility. Their use and mappings are fully described in API Compatibility Macros in HDF5; we urge you to read that document closely.

When both the HDF5 library and the application are built and installed with no specific compatibility flags,  H5T_OPEN is mapped to the most recent version of the function, currently H5T_OPEN2 . If the library and/or application is compiled for Release 1.6 emulation, H5T_OPEN will be mapped to H5T_OPEN1 . Function-specific flags are available to override these settings on a function-by-function basis when the application is compiled.

Specific compile-time compatibility flags and the resulting mappings are as follows:

Compatibility settingH5Topen mapping

Global settings
No compatibility flagH5Topen2 
Enable deprecated symbolsH5Topen2 
Disable deprecated symbolsH5Topen2 
Emulate Release 1.6 interface    H5Topen1 

Function-level macros
H5Topen_vers = 2H5Topen2
H5Topen_vers = 1H5Topen1

The datatype identifier returned by this macro can be released with H5T_CLOSE  when the identifier is no longer needed so that resource leaks will not develop.

History:
Release    Change
1.8.0The function H5Topen renamed to H5Topen1 and deprecated in this release. 
The macro H5Topen and the function H5Topen2 introduced in this release.

--- Last Modified: May 23, 2019 | 03:14 PM