HDF5 Software Changes from Release to Release

New Functions

C functions:

The following C functions are new for this release and are documented in the HDF5 Reference Manual.

	H5Pset_elink_fapl		herr_t H5Pset_elink_fapl( hid_t lapl_id, hid_tfapl_id ) See entry.
	H5Pget_elink_fapl		hid_t H5Pget_elink_fapl( hid_t lapl_id ) See entry.

Fortran Subroutine:

The following subroutine is new in this release:
     H5Tget_native_type_f

New C++ Wrappers

The following functions were added as wrappers for the C function H5Rdereference to replace the incorrect IdComponent::dereference():

        void H5Object::dereference(H5Object& obj, void* ref, 
                                   H5R_type_t ref_type=H5R_OBJECT)
        void H5Object::dereference(H5File& h5file, void* ref, 
                                   H5R_type_t ref_type=H5R_OBJECT)
        void H5Object::dereference(Attribute& obj, void* ref, 
                                   H5R_type_t ref_type=H5R_OBJECT)
                

The following constructors were added to create the associated objects by way of dereference:

        DataSet(H5Object& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        DataSet(H5File& file, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        DataSet(Attribute& attr, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        Group(H5Object& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        Group(H5File& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        Group(Attribute& attr, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        DataType(H5Object& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        DataType(H5File& file, void* ref, H5R_type_t ref_type=H5R_OBJECT)
        DataType(Attribute& attr, void* ref, H5R_type_t ref_type=H5R_OBJECT)
                

Functions with Changed Syntax

C functions:

H5Fget_obj_count

ssize_t H5Fget_obj_count( hid_t file_id, unsigned int types )

H5Fget_obj_ids

ssize_t H5Fget_obj_ids( hid_t file_id, unsigned int types,
        size_t max_objs, hid_t *obj_id_list )

Changed Fortran Subroutines

The optional parameter mounted has been added to the following subroutines:

h5gget_info_f
h5gget_info_by_idx_f
h5gget_info_by_name_f     

Changed Data Structure

H5G_info_t

A mounted filed has been added to the H5G_info_t struct.

Tools with Changed Interface or Behavior

h5diff

h5diff now returns 1 if the files differ in structure, i.e., if the file graphs differ by any object.

The tool’s error return code has been changed to 2.

h5repack and h5diff

The standard command-line syntax of both tools has been changed to parallel that of h5dump. The new syntax of each is as follows:

     h5repack [OPTIONS] file1 file2

     h5diff [OPTIONS] file1 file2 [object1 [object2]]

In each case, the old syntax remains available (though undocumented) to avoid breaking existing scripts.

h5repack

The following new options control the addition of user block data to an existing HDF5 file:

-u U --ublock=U		Specifies the name of the file containing the user block data to be added.
-b B --block=B		Specifies the size of the block to be added.

The following new options set parameters governing the tool’s use of H5Pset_alignment:

-t T --threshold=T		Specifies the threshold value for H5Pset_alignment.
-a A --alignment=A		Specifies the alignment value for H5Pset_alignment.

h5repack now supports multiple instances of the '-f' or '--filter' option, allowing the use of multiple I/O filters with an object.

With no change in the command-line syntax, h5repack now retains an existing userblock when repacking an HDF5 file.

h5import

The floating point format flag TEXTFPE, for scientific notation, has been deprecated. The flag TEXTFP, which accepts scientific notation, should be used instead.

h5import now imports string data with the STR keyword in the INPUT-CLASS configuration field.

h5dump and h5ls

These tools now traverse external links when performing recursive traversals.

h5dump

Binary output now defaults to NATIVE with the '-b' option, optionally accepting NATIVE, FILE, BE, and LE.

The new '-m T' or '--format T' option enables a user-defined formatting string for printing floating-point numbers.

With no change in the command-line syntax, h5dump now prints a compression ratio when compression filters are in use.

Deprecated Functions

        H5Pset_preserve
        H5Pget_preserve 

The original role of these functions is now part of the core HDF5 Library functionality.

Changed File Installation

Changed Library Configuration

Note that if an SZIP library path is set in a user-supplied LD_LIBRARY_PATH, in an existing script, for example, that does not necessarily need to be changed; configure will prepend the SZIP library path extracted from --with-szlib to the user-supplied LD_LIBRARY_PATH.

The most significant new feature is an expanded set of Fortran90 APIs, enabling essentially all new C library features of Release 1.8.0.

New Functions and Tools

C functions:

There are no new C functions for Release 1.8.1.

Fortran subroutines:

The following Fortran subroutines are new for Release 1.8.1 and are documented in the HDF5 Reference Manual.

H5A h5acreate_f h5acreate_by_name_f h5adelete_by_idx_f h5adelete_by_name_f h5aexists_f h5aexists_by_name_f h5aget_create_plist_f h5aget_info_f h5aget_info_by_idx_f	h5aget_info_by_name_f h5aget_name_by_idx_f h5aget_storage_size_f h5aopen_f h5aopen_by_idx_f h5aopen_by_name_f h5arename_f h5arename_by_name_f
H5D h5dcreate_anon_f h5dcreate_f	h5dopen_f h5dset_extent_f
H5G h5gcreate_anon_f h5gcreate_f h5gget_create_plist_f h5gget_info_f	h5gget_info_by_idx_f h5gget_info_by_name_f h5gopen_f
H5L h5lcopy_f h5lcreate_external_f h5lcreate_hard_f h5lcreate_soft_f h5ldelete_f h5ldelete_by_idx_f	h5lexists_f h5lget_info_f h5lget_info_by_idx_f h5lget_name_by_idx_f h5lmove_f
H5O h5olink_f	h5oopen_f
H5P h5pget_attr_creation_order_f h5pget_attr_phase_change_f h5pget_char_encoding_f h5pget_copy_object_f h5pget_create_inter_group_f h5pget_data_transform_f h5pget_elink_prefix_f h5pget_est_link_info_f h5pget_fapl_direct_f h5pget_link_creation_order_f h5pget_link_phase_change_f h5pget_local_heap_size_hint_f h5pget_nlinks_f h5pget_obj_track_times_f h5pget_shared_mesg_index_f h5pget_shared_mesg_nindexes_f	h5pset_attr_creation_order_f h5pset_attr_phase_change_f h5pset_char_encoding_f h5pset_copy_object_f h5pset_create_inter_group_f h5pset_data_transform_f h5pset_elink_prefix_f h5pset_est_link_info_f h5pset_fapl_direct_f h5pset_libver_bounds_f h5pset_link_creation_order_f h5pset_link_phase_change_f h5pset_local_heap_size_hint_f h5pset_obj_track_times_f h5pset_nbit_f h5pset_nlinks_f h5pset_scaleoffset_f
H5R h5rget_name_f
H5S h5sdecode_f h5sencode_f	h5sextent_equal_f
H5T h5tcommit_anon_f h5tcommit_f h5tcommitted_f h5tcompiler_conv_f	h5tdecode_f h5tencode_f h5tget_create_plist_f h5topen_f

C++ wrappers:

There are no new C++ wrappers for Release 1.8.1.

Functions and Tools with Changed Syntax

C functions with changed syntax:

There are no C functions with changed syntax in Release 1.8.1.

Fortran subroutines with changed syntax:

In the following Fortran subroutines, spos is a new parameter indicating the position of the sign bit:
     h5tset_fields_f(type_id, spos, epos, esize, mpos, msize, hdferr)
     h5tget_fields_f(type_id, spos, epos, esize, mpos, msize, hdferr)

Changed C++ wrappers:

• The class AbstractDS was moved out of H5Object.

  The class Attribute now multiply inherits from IdComponent and AbstractDs; the class DataSet now multiply inherits from H5Object and AbstractDs.

  In addition, data member IdComponent::id was moved into subclasses: Attribute, DataSet, DataSpace, DataType, H5File, Group, and PropList.

• IdComponent::dereference was incorrect; it was changed from:
     void IdComponent::dereference(IdComponent& obj, void* ref)
to:
     void H5Object::dereference(H5File& h5file, void* ref)
     void H5Object::dereference(H5Object& obj, void* ref)

Tools with changed syntax:

• The command-line syntax of h5repack was changed in Release 1.8.0 to the following:
       h5repack [OPTIONS] in_file out_file

  Since this would be imcompatible with existing user scripts, the original syntax has be re-enabled in this release:
       h5repack -i in_file -o out_file [OPTIONS]

  h5repack now understands either syntax.

• An h5repack option to set the minimum number of links in indexed format was introduced in Release 1.8.0 as '-d min_indexed_links' or '--indexed=min_indexed_links'. In Release 1.8.1, the '-i' form has been changed to '-d' as follows:
       -d min_indexed_links
  or
       --indexed=min_indexed_links

• The command-line syntax of h5diff was changed in Release 1.8.0 to the following:
       h5diff [OPTIONS] file1 file2 [object1 [object2 ] ]

Tools with new options:

• h5dump -m T  or  --format T   Sets format of floating point output
  

Changed Behavior or Output

Changed library behavior:

A 4GB limit on the size of dataset chunks is now properly enforced when a dataset is created.

The HDF5 Library now works more effectively with external links. Some valid external links that previously failed will now be properly recognized. See H5Lcreate_external.

C functions with changed behavior:

The behavior of H5Lcreate_external has changed as described immediately above.

Tools with changed behavior and changed output:

The h5dump -p option now prints the compression ratio if a compression filter is associated with a dataset.

h5dump now supports external links, displaying the target objects (datasets, groups, and named datatypes).

Tools with changed output:

Changed Library Configuration

The following configuration flag is new with this release:

--disable-sharedlib-rpath

Removed Patch Requirement

The patch that was required for Cygwin with HDF5 Release 1.8.0 has been rolled into this release and no longer needs to be applied by the user.

See the document “What’s New in HDF5 1.8.0” for a high-level overview of the new functionality in this release. The following pages assume a familiarity with that overview.

This section provides details of the API-level changes that have been made in the transition to HDF5 Release 1.8.0 from the Release 1.6.x series.

API Compatibility Macros with Associated Renamed and New Functions

Release 1.8.0 introduces API compatibility macros designed to facilitate application migration. These macros are intended to facilitate developer management of a clean, step-by-step migration from an older HDF5 Library to the new release; they can also be used to enable older applications to use the new library without requiring that the application be rewritten. See API Compatibility Macros in HDF5 for a full description.

Macros are identified in reference manual function indexes by an italic typeface.

The new macros and the new and old functions to which they may be mapped are as follows:

H5Acreate	H5Acreate1 H5Acreate2	Renamed from H5Acreate New
H5Aiterate	H5Aiterate1 H5Aiterate2	Renamed from H5Aiterate New
H5Eclear	H5Eclear1 H5Eclear2	Renamed from H5Eclear New
H5Eget_auto	H5Eget_auto1 H5Eget_auto2	Renamed from H5Eget_auto New
H5Eprint	H5Eprint1 H5Eprint2	Renamed from H5Eprint New
H5Epush	H5Epush1 H5Epush2	Renamed from H5Epush New
H5Eset_auto	H5Eset_auto1 H5Eset_auto2	Renamed from H5Eset_auto New
H5Ewalk	H5Ewalk1 H5Ewalk2	Renamed from H5Ewalk New
H5Gcreate	H5Gcreate1 H5Gcreate2	Renamed from H5Gcreate New
H5Gopen	H5Gopen1 H5Gopen2	Renamed from H5Gopen New
H5Pget_filter	H5Pget_filter1 H5Pget_filter2	Renamed from H5Pget_filter New
H5Pget_filter_by_id	H5Pget_filter_by_id1 H5Pget_filter_by_id2	Renamed from H5Pget_filter_by_id New
H5Pinsert	H5Pinsert1 H5Pinsert2	Renamed from H5Pinsert New
H5Pregister	H5Pregister1 H5Pregister2	Renamed from H5Pregister New
H5Rget_obj_type	H5Rget_obj_type1 H5Rget_obj_type2	Renamed from H5Rget_obj_type New
H5Tarray_create	H5Tarray_create1 H5Tarray_create2	Renamed from H5Tarray_create New
H5Tcommit	H5Tcommit1 H5Tcommit2	Renamed from H5Tcommit New
H5Tget_array_dims	H5Tget_array_dims1 H5Tget_array_dims2	Renamed from H5Tget_array_dims New
H5Topen	H5Topen1 H5Topen2	Renamed from H5Topen New

New Functions and Tools

C functions:

The following C functions are new for Release 1.8.0 and, unless otherwise noted, are documented in the HDF5 Reference Manual.

Recursive iteration
H5Lvisit	herr_t H5Lvisit( hid_t group_id, H5_index_t index_type, H5_iter_order_t order, H5L_iterate_t op, void *op_data ) See entry.
H5Lvisit_by_name	herr_t H5Lvisit_by_name( hid_t loc_id, const char *group_name, H5_index_t index_type, H5_iter_order_t order, H5L_iterate_t op, void *op_data, hid_t lapl_id ) See entry.
H5Ovisit	herr_t H5Ovisit( hid_t group_id, H5_index_t index_type, H5_iter_order_t order, H5O_iterate_t op, void *op_data ) See entry.
H5Ovisit_by_name	herr_t H5Ovisit_by_name( hid_t loc_id, const char *object_name, H5_index_t index_type, H5_iter_order_t order, H5O_iterate_t op, void *op_data, hid_t lapl_id ) See entry.
“Format bounds” property Release-to-release format compatibility
H5Pset_libver_bounds	herr_t H5Pset_libver_bounds( hid_t fapl_id, H5F_libver_t low, H5F_libver_t high ) See entry.
H5Pget_libver_bounds	herr_t H5Pget_libver_bounds( hid_t fapl_id, H5F_libver_t *low, H5F_libver_t *high ) See entry.
Configurable compact-or-indexed groups (compact and large groups)
H5Pset_link_phase_change	herr_t H5Pset_link_phase_change( hid_t gcpl_id, unsigned max_compact, unsigned min_dense ) See entry.
H5Pget_link_phase_change	herr_t H5Pget_link_phase_change( hid_t gcpl_id, unsigned *max_compact, unsigned *min_dense ) See entry.
H5Pset_est_link_info	herr_t H5Pset_est_link_info( hid_t gcpl_id, unsigned est_num_entries, unsigned est_name_len ) See entry.
H5Pget_est_link_info	herr_t H5Pget_est_link_info( hid_t gcpl_id, unsigned *est_num_entries, unsigned *est_name_len ) See entry.
H5Pset_nlinks	herr_t H5Pset_nlinks( hid_t lapl_id, size_t nlinks ) See entry.
H5Pget_nlinks	herr_t H5Pget_nlinks( hid_t lapl_id, size_t *nlinks ) See entry.
User-defined links
H5Lcreate_ud	herr_t H5Lcreate_ud( hid_t link_loc_id, const char *link_name, H5L_type_t link_type, const char *udata, size_t udata_size, hid_t lcpl_id, hid_t lapl_id ) See entry.
H5Lregister	herr_t H5Lregister( const H5L_class_t * link_class ) See entry.
H5Lunregister	herr_t H5Lunregister( H5L_type_t link_cls_id ) See entry.
H5Oincr_refcount	herr_t H5Oincr_refcount( hid_t object_id ) See entry.
H5Odecr_refcount	herr_t H5Odecr_refcount( hid_t object_id ) See entry.
External links
H5Lcreate_external	herr_t H5Lcreate_external( const char *file_name, const char *object_name, hid_t link_loc_id, const char *link_name, hid_t lcpl_id, hid_t lapl_id ) See entry.
H5Lunpack_elink_val	herr_t H5Lunpack_elink_val( char *ext_linkval, size_t link_size, const char **filename, const char **obj_path ) See entry.
H5Pset_elink_prefix	herr_t H5Pset_elink_prefix( hid_t lapl_id, const char *prefix ) See entry.
H5Pget_elink_prefix	herr_t H5Pget_elink_prefix( hid_t lapl_id, const char **prefix ) See entry.
Link creation order tracking and indexing
H5Pset_link_creation_order	herr_t H5Pset_link_creation_order( hid_t ocpl_id, unsigned *crt_order_flags ) See entry.
H5Pget_link_creation_order	herr_t H5Pget_link_creation_order( hid_t ocpl_id, unsigned *crt_order_flags ) See entry.
H5Gget_create_plist	hid_t H5Gget_create_plist( hid_t group_id ) See entry.
H5Gget_info_by_idx	herr_t H5Gget_info_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_type, H5_iter_order_t order, hsize_t n, H5G_info_t *group_info, hid_t lapl_id ) See entry.
H5Tget_create_plist	hid_t H5Tget_create_plist( hid_t dtype_id ) See entry.
Link API (H5L), an all-new interface (includes user-defined and external links)
H5Lcopy	herr_t H5Lcopy( hid_t src_loc_id, const char *src_name, hid_t dest_loc_id, const char *dest_name, hid_t lcpl_id hid_t lapl_id ) See entry.
H5Lcreate_external	herr_t H5Lcreate_external( const char *file_name, const char *object_name, hid_t link_loc_id, const char *link_name, hid_t lcpl_id, hid_t lapl_id ) See entry.
H5Lcreate_hard	herr_t H5Lcreate_hard( hid_t obj_loc_id, const char *obj_name, hid_t link_loc_id, const char *link_name, hid_t lcpl_id, hid_t lapl_id ) See entry.
H5Lcreate_soft	herr_t H5Lcreate_soft( const char *target_path, hid_t link_loc_id, const char *link_name, hid_t lcpl_id, hid_t lapl_id ) See entry.
H5Lcreate_ud	herr_t H5Lcreate_ud( hid_t link_loc_id, const char *link_name, H5L_type_t link_type, const char *udata, size_t udata_size, hid_t lcpl_id, hid_t lapl_id ) See entry.
H5Ldelete	herr_t H5Ldelete( hid_t loc_id, const char *name, hid_t lapl_id ) See entry.
H5Ldelete_by_idx	herr_t H5Ldelete_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, hid_t lapl_id ) See entry.
H5Lexists	htri_t H5Lexists( hid_t loc_id, const char *name, hid_t lapl_id ) See entry.
H5Lget_info	herr_t H5Lget_info( hid_t link_loc_id, const char *link_name, H5L_info_t *link_buff, hid_t lapl_id ) See entry.
H5Lget_info_by_idx	herr_t H5Lget_info_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, H5L_info_t *link_val, hid_t lapl_id ) See entry.
H5Lget_name_by_idx	ssize_t H5Lget_name_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, char *name, size_t size, hid_t lapl_id ) See entry.
H5Lget_val	herr_t H5Lget_val( hid_t link_loc_id, const char *link_name, void *linkval_buff, size_t size, hid_t lapl_id ) See entry.
H5Lget_val_by_idx	ssize_t H5Lget_val_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, char *value_buf, size_t size, hid_t lapl_id ) See entry.
H5Lis_registered	htri_t H5Lis_registered( H5L_type_t link_cls_id ) See entry.
H5Literate	herr_t H5Literate( hid_t loc_id, H5_index_t index_type, H5_iter_order_t order, hsize_t *idx, H5L_iterate_t op, void *op_data ) See entry.
H5Literate_by_name	herr_t H5Literate( hid_t loc_id, const char *group_name, H5_index_t index_type, H5_iter_order_t order, hsize_t *idx, H5L_iterate_t op, void *op_data, hid_t *lapl_id ) See entry.
H5Lmove	herr_t H5Lmove( hid_t src_loc_id, const char *src_name, hid_t dest_loc_id, const char *dest_name, hid_t lcpl, hid_t lapl ) See entry.
H5Lregister	herr_t H5Lregister( const H5L_class_t * link_class ) See entry.
H5Lunpack_elink_val	herr_t H5Lunpack_elink_val( char *ext_linkval, size_t link_size, const char **filename, const char **obj_path ) See entry.
H5Lunregister	herr_t H5Lunregister( H5L_type_t link_cls_id ) See entry.
H5Lvisit	herr_t H5Lvisit( hid_t group_id, H5_index_t index_type, H5_iter_order_t order, H5L_iterate_t op, void *op_data ) See entry.
H5Lvisit_by_name	herr_t H5Lvisit_by_name( hid_t loc_id, const char *group_name, H5_index_t index_type, H5_iter_order_t order, H5L_iterate_t op, void *op_data, hid_t lapl_id ) See entry.
Enhanced attribute handling
H5Acreate2	hid_t H5Acreate2( hid_t loc_id, const char *obj_name, const char *attr_name, hid_t type_id, hid_t space_id, hid_t acpl_id, hid_t aapl_id, hid_t lapl_id ) See entry.
H5Adelete_by_idx	herr_t H5Adelete_by_idx( hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t lapl_id ) See entry.
H5Adelete_by_name	herr_t H5Adelete_by_name( hid_t loc_id, const char *obj_name, const char *attr_name, hid_t lapl_id ) See entry.
H5Aget_info	herr_t H5Aget_info( hid_t attr_id, H5A_info_t *ainfo ) See entry.
H5Aget_info_by_idx	herr_t H5Aget_info_by_idx( hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, H5A_info_t *ainfo, hid_t lapl_id ) See entry.
H5Aget_info_by_name	herr_t H5Aget_info_by_name( hid_t loc_id, const char *obj_name, const char *attr_name, H5A_info_t *ainfo, hid_t lapl_id ) See entry.
H5Aget_name_by_idx	ssize_t H5Aget_name_by_idx( hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, char *name, size_t size, hid_t lapl_id ) See entry.
H5Aget_storage_size	hsize_t H5Aget_storage_size( hid_t attr_id ) See entry.
H5Aiterate2	herr_t H5Aiterate2( hid_t obj_id, H5_index_t idx_type, H5_iter_order_t order, hsize_t *n, H5A_operator2_t op, void *op_data ) See entry.
H5Aiterate_by_name	herr_t H5Aiterate_by_name( hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t *n, H5A_operator2_t op, void *op_data, hid_t lapd_id ) See entry.
H5Aopen	herr_t H5Aopen( hid_t loc_id, const char *obj_name, const char *attr_name, hid_t aapl_id, hid_t lapl_id ) See entry.
H5Aopen_by_idx	herr_t H5Aopen_by_idx( hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t aapl_id, hid_t lapl_id ) See entry.
H5Arename_by_name	herr_t H5Arename_by_name( hid_t loc_id, const char *obj_name, const char *old_attr_name, const char *new_attr_name, hid_t lapl_id ) See entry.
Managing large numbers of attributes
H5Pset_attr_phase_change	herr_t H5Pset_attr_phase_change( hid_t ocpl_id, unsigned max_compact, unsigned min_dense ) See entry.
H5Pget_attr_phase_change	herr_t H5Pget_attr_phase_change( hid_t ocpl_id, unsigned *max_compact, unsigned *min_dense ) See entry.
Attribute creation order tracking and indexing
H5Pset_attr_creation_order	herr_t H5Pset_attr_creation_order( hid_t ocpl_id, unsigned crt_order_flags ) See entry.
H5Pget_attr_creation_order	herr_t H5Pget_attr_creation_order( hid_t ocpl_id, unsigned *crt_order_flags ) See entry.
H5Aget_create_plist	hid_t H5Aget_create_plist( hid_t attr_id ) See entry.
Shared object header messages (SOHM)
H5Pset_shared_mesg_index	herr_t H5Pset_shared_mesg_index( hid_t fcpl_id, unsigned index_num, unsigned mesg_type_flags, unsigned min_mesg_size ) See entry.
H5Pset_shared_mesg_nindexes	herr_t H5Pset_shared_mesg_nindexes( hid_t plist_id, unsigned nindexes ) See entry.
H5Pset_shared_mesg_phase_change	herr_t H5Pset_shared_mesg_phase_change( hid_t fcpl_id, unsigned max_list, unsigned min_btree ) See entry.
H5Pget_shared_mesg_index	herr_t H5Pget_shared_mesg_index( hid_t fcpl_id, unsigned index_num, unsigned *mesg_type_flags, unsigned *min_mesg_size ) See entry.
H5Pget_shared_mesg_nindexes	herr_t H5Pget_shared_mesg_nindexes( hid_t fcpl_id, unsigned *nindexes ) See entry.
H5Pget_shared_mesg_phase_change	herr_t H5Pget_shared_mesg_phase_change( hid_t fcpl_id, unsigned *max_list, unsigned *min_btree ) See entry.
Enhanced local heap size management   (group meta data)
H5Pset_local_heap_size_hint	herr_t H5Pset_local_heap_size_hint( hid_t gcpl_id, size_t *size_hint ) See entry.
H5Pget_local_heap_size_hint	herr_t H5Pget_local_heap_size_hint( hid_t gcpl_id, size_t size_hint ) See entry.
UNICODE support
H5Pset_char_encoding	herr_t H5Pset_char_encoding( hid_t plist_id, H5T_cset_t encoding ) See entry.
H5Pget_char_encoding	herr_t H5Pget_char_encoding( hid_t plist_id, H5T_cset_t encoding ) See entry.

Object API (H5O), all new
H5Oclose	herr_t H5Oclose( hid_t object_id ) See entry.
H5Ocopy	herr_t H5Ocopy( hid_t src_loc_id, const char *src_name, hid_t dst_loc_id, const char *dst_name, hid_t ocp_plist_id, hid_t lcpl_id ) See entry.
H5Odecr_refcount	herr_t H5Odecr_refcount( hid_t object_id ) See entry.
H5Oget_comment	ssize_t H5Oget_comment( hid_t object_id, char *comment, size_t bufsize ) See entry.
H5Oget_comment_by_name	ssize_t H5Oget_comment_by_name( hid_t loc_id, const char *name, char *comment, size_t bufsize, hid_t lapl_id ) See entry.
H5Oget_info	herr_t H5Oget_info( hid_t object_id, H5O_info_t *obj_info ) See entry.
H5Oget_info_by_idx	herr_t H5Oget_info_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, H5O_info_t *obj_info, hid_t lapl_id ) See entry.
H5Oget_info_by_name	herr_t H5Oget_info_by_name( hid_t loc_id, const char *object_name, H5O_info_t *object_info, hid_t lapl_id ) See entry.
H5Oincr_refcount	herr_t H5Oincr_refcount( hid_t object_id ) See entry.
H5Olink	herr_t H5Olink( hid_t obj_id, hid_t new_loc_id, const char *new_link_name, hid_t lcpl, hid_t lapl ) See entry.
H5Oopen	hid_t H5Oopen( hid_t loc_id, const char *name, hid_t lapl_id ) See entry.
H5Oopen_by_addr	hid_t H5Oopen_by_addr( hid_t loc_id, haddr_t addr ) See entry.
H5Oopen_by_idx	herr_t H5Oopen_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, hid_t lapl_id ) See entry.
H5Oset_comment	herr_t H5Oset_comment( hid_t object_id, const char *comment ) See entry.
H5Oset_comment_by_name	herr_t H5Oset_comment_by_name( hid_t loc_id, const char *name, const char *comment, hid_t lapl_id ) See entry.
H5Ovisit	herr_t H5Ovisit( hid_t group_id, H5_index_t index_type, H5_iter_order_t order, H5O_iterate_t op, void *op_data ) See entry.
H5Ovisit_by_name	herr_t H5Ovisit_by_name( hid_t loc_id, const char *object_name, H5_index_t index_type, H5_iter_order_t order, H5O_iterate_t op, void *op_data, hid_t lapl_id ) See entry.
Object creation or copying with “create intermediate groups” property
H5Pset_create_intermediate_group	herr_t H5Pset_create_intermediate_group( hid_t gcpl_id, unsigned crt_intermed_group ) See entry.
H5Pget_create_intermediate_group	herr_t H5Pget_create_intermediate_group( hid_t gcpl_id, unsigned *crt_intermed_group ) See entry.
Object copy properties
H5Ocopy	herr_t H5Ocopy( hid_t src_loc_id, const char *src_name, hid_t dst_loc_id, const char *dst_name, hid_t ocp_plist_id, hid_t lcpl_id ) See entry.
H5Pset_copy_object	herr_t H5Pset_copy_object( hid_t cplist_id, unsigned copy_options ) See entry.
H5Pget_copy_object	herr_t H5Pget_copy_object( hid_t cplist_id, unsigned *copy_options ) See entry.
Improved object and file information retrieval
H5Aget_info	herr_t H5Aget_info( hid_t attr_id, H5A_info_t *ainfo ) See entry.
H5Aget_info_by_name	herr_t H5Aget_info_by_name( hid_t loc_id, const char *obj_name, const char *attr_name, H5A_info_t *ainfo, hid_t lapl_id ) See entry.
H5Aget_info_by_idx	herr_t H5Aget_info_by_idx( hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, H5A_info_t *ainfo, hid_t lapl_id ) See entry.
H5Fget_info	herr_t H5Fget_info( hid_t obj_id, H5F_info_t *bh_info ) See entry.
H5Gget_info	herr_t H5Gget_info( hid_t group_id, H5G_info_t group_info ) See entry.
H5Gget_info_by_name	herr_t H5Gget_info_by_name( hid_t loc_id, const char *group_name, H5G_info_t group_info, hid_t lapl_id ) See entry.
H5Gget_info_by_idx	herr_t H5Gget_info_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_type, H5_iter_order_t order, hsize_t n, H5G_info_t group_info, hid_t lapl_id ) See entry.
H5Lget_info	herr_t H5Lget_info( hid_t link_loc_id, const char *link_name, H5L_info_t *link_buff, hid_t lapl_id ) See entry.
H5Lget_info_by_idx	herr_t H5Lget_info_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, H5L_info_t *link_val, hid_t lapl_id ) See entry.
H5Oget_info	herr_t H5Oget_info( hid_t object_id, H5O_info_t *obj_info ) See entry.
H5Oget_info_by_name	herr_t H5Oget_info_by_name( hid_t loc_id, const char *object_name, H5O_info_t *object_info, hid_t lapl_id ) See entry.
H5Oget_info_by_idx	herr_t H5Oget_info_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, H5O_info_t *obj_info, hid_t lapl_id ) See entry.
Name of referenced object
H5Rget_name	ssize_t H5Rget_name( hid_t loc_id, H5R_type_t ref_type, void *ref, char *name, size_t size ) See entry.
Anonymous object creation
H5Dcreate_anon	hid_t H5Dcreate_anon( hid_t loc_id, hid_t type_id, hid_t space_id, hid_t dcpl_id, hid_t dapl_id ) See entry.
H5Gcreate_anon	hid_t H5Gcreate_anon(hid_t loc_id, const char * name, hid_t gcpl_id, hid_t gapl_id) See entry.
H5Tcommit_anon	herr_t H5Tcommit_anon( hid_t loc_id, hid_t type_id, hid_t tcpl_id, hid_t tapl_id ) See entry.
H5Lcreate_hard	herr_t H5Lcreate_hard( hid_t obj_loc_id, const char *obj_name, hid_t link_loc_id, const char *link_name, hid_t lcpl, hid_t lapl ) See entry.
New-style object creation and open functions  (includes anonymous object creation)
H5Dcreate_anon	hid_t H5Dcreate_anon( hid_t loc_id, hid_t type_id, hid_t space_id, hid_t dcpl_id, hid_t dapl_id ) See entry.
H5Dcreate2	hid_t H5Dcreate2( hid_t loc_id, const char *name, hid_t type_id, hid_t space_id, hid_t lcpl_id, hid_t dcpl_id, hid_t dapl_id ) See entry.
H5Dopen2	hid_t H5Dopen2( hid_t loc_id, const char *name, hid_t dapl_id ) See entry.
H5Gcreate_anon	hid_t H5Gcreate_anon(hid_t loc_id, const char * name, hid_t gcpl_id, hid_t gapl_id) See entry.
H5Gcreate2	hid_t H5Gcreate2( hid_t loc_id, const char *name, hid_t lcpl_id, hid_t gcpl_id, hid_t gapl_id ) See entry.
H5Gopen2	hid_t H5Gopen2( hid_t loc_id, const char * name, hid_t gapl_id ) See entry.
H5Tcommit_anon	herr_t H5Tcommit_anon( hid_t loc_id, hid_t type_id, hid_t tcpl_id, hid_t tapl_id ) See entry.
H5Tcommit2	herr_t H5Tcommit2( hid_t loc_id, const char *name, hid_t type_id, hid_t lcpl_id, hid_t tcpl_id, hid_t tapl_id ) See entry.
H5Topen2	hid_t H5Topen2( hid_t loc_id, const char * name, hid_t tapl_id ) See entry.
User-defined identifiers
H5Iregister	hid_t H5Iregister(H5I_type_t type, void *object) See entry.
H5Iregister_type	H5I_type_t H5Iregister_type(size_t hash_size, unsigned reserved, H5I_free_t free_func) See entry.
H5Idestroy_type	herr_t H5Idestroy_type(H5I_type_t type) See entry.
H5Iinc_type_ref	int H5Iinc_type_ref(H5I_type_t type) See entry.
H5Idec_type_ref	int H5Idec_type_ref(H5I_type_t type) See entry.
H5Iget_type_ref	int H5Iget_type_ref(H5I_type_t type) See entry.
Other identifier API (H5I) enhancemen