HDF5 Software Changes from Release to Release

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) enhancements
H5Iclear_type	herr_t H5Iclear_type(H5I_type_t type, hbool_t force) See entry.
H5Inmembers	int H5Inmembers(H5I_type_t type, hsize_t *num_members) See entry.
H5Iobject_verify	void * H5Iobject_verify(hid_t id, H5I_type_t id_type) See entry.
H5Iremove_verify	void * H5Iremove_verify(hid_t id, H5I_type_t id_type) See entry.
H5Isearch	void * H5Isearch(H5I_type_t type, H5I_search_func_t func, void *key) See entry.
H5Itype_exists	htri_t H5Itype_exists(H5I_type_t type) See entry.
Compression filters: N-bit and scale-offset
H5Pset_nbit	herr_t H5Pset_nbit( hid_t plist_id ) See entry.
H5Pset_scaleoffset	herr_t H5Pset_scaleoffset( hid_t plist_id, H5Z_SO_scale_type_t scale_type, int scale_factor ) See entry.
User-defined datatype conversion callback functions
H5Pget_type_conv_cb	herr_t H5Pget_type_conv_cb( hid_t plist, H5T_conv_except_func_t *func, void **op_data ) See entry.
H5Pset_type_conv_cb	herr_t H5Pset_type_conv_cb( hid_t plist, H5T_conv_except_func_t func, void *op_data ) See entry.
Datatype compiler conversion check
H5Tcompiler_conv	htri_t H5Tcompiler_conv( hid_t src_id, hid_t dst_id ) See entry.
Dataset array size reduction
H5Dset_extent	herr_t H5Dset_extent( hid_t dset_id, const hsize_t *size ) See entry.
Dataspace equivalence
H5Sextent_equal	herr_t H5Sextent_equal( hid_t sid1, hid_t sid2 ) See entry.
Direct I/O, bypassing system cache
H5Pset_fapl_direct	herr_t H5Pset_fapl_direct( hid_t fapl_id, size_t alignment, size_t block_size, size_t cbuf_size ) See entry.
H5Pget_fapl_direct	herr_t H5Pget_fapl_direct( hid_t fapl_id, size_t *alignment, size_t *block_size, size_t *cbuf_size ) See entry.
Parallel I/O optimization (collective chunk I/O)
H5Pset_dxpl_mpio_chunk_opt	herr_t H5Pset_dxpl_mpio_chunk_opt(hid_t dxpl_id, H5FD_mpio_chunk_opt_t opt_mode) See entry.
H5Pset_dxpl_mpio_chunk_opt_num	herr_t H5Pset_dxpl_mpio_chunk_opt_num(hid_t dxpl_id, unsigned num_chunk_per_proc) See entry.
H5Pset_dxpl_mpio_chunk_opt_ratio	herr_t H5Pset_dxpl_mpio_chunk_opt_ratio(hid_t dxpl_id, unsigned percent_num_proc_per_chunk) See entry.
H5Pset_dxpl_mpio_collective_opt	herr_t H5Pset_dxpl_mpio_collective_opt( hid_t dxpl_id, H5FD_mpio_collective_opt_t opt_mode ) See entry.
Enhanced error handling (H5E)
H5Eauto_is_v2	herr_t H5Eauto_is_v2( hid_t estack_id, unsigned *is_stack ) See entry.
H5Eclear2	herr_t H5Eclear2( hid_t estack_id ) See entry.
H5Eclose_msg	herr_t H5Eclose_msg (hid_t mesg_id) See entry.
H5Eclose_stack	herr_t H5Eclose_stack(hid_t estack_id) See entry.
H5Ecreate_msg	hid_t H5Ecreate_msg(hid_t class, H5E_type_t msg_type, const char* mesg) See entry.
H5Eget_auto2	herr_t H5Eget_auto2(hid_t estack_id, H5E_auto2_t * func, void **client_data) See entry.
H5Eget_class_name	ssize_t H5Eget_class_name(hid_t class_id, char* name, size_t size) See entry.
H5Eget_current_stack	hid_t H5Eget_current_stack(void) See entry.
H5Eget_msg	ssize_t H5Eget_msg(hid_t mesg_id, H5E_type_t* mesg_type, char* mesg, size_t size) See entry.
H5Eget_num	ssize_t H5Eget_num(hid_t estack_id) See entry.
H5Epop	herr_t H5Epop(hid_t estack_id, size_t count) See entry.
H5Eprint2	herr_t H5Eprint2(hid_t estack_id, FILE * stream) See entry.
H5Epush2	herr_t H5Epush2(hid_t estack_id, const char *file, const char *func, unsigned line, hid_t class_id, hid_t major_id, hid_t minor_id, const char *msg, ...) See entry.
H5Eregister_class	hid_t H5Eregister_class(const char* cls_name, const char* lib_name, const char* version) See entry.
H5Eset_auto2	herr_t H5Eset_auto2(hid_t estack_id, H5E_auto2_t func, void *client_data) See entry.
H5Eset_current_stack	herr_t H5Eset_current_stack(hid_t estack_id) See entry.
H5Eunregister_class	herr_t H5Eunregister_class(hid_t class_id) See entry.
H5Ewalk2	herr_t H5Ewalk2(hid_t estack_id, H5E_direction_t direction, H5E_walk2_t func, void * client_data) See entry.
Meta data cache management
H5Fget_mdc_config	herr_t H5Fget_mdc_config(hid_t file_id, H5AC_cache_config_t *config_ptr) See entry.
H5Fget_mdc_hit_rate	herr_t H5Fget_mdc_hit_rate(hid_t file_id, double *hit_rate_ptr) See entry.
H5Fget_mdc_size	herr_t H5Fget_mdc_size(hid_t file_id, size_t *max_size_ptr, size_t *min_clean_size_ptr, size_t *cur_size_ptr, int *cur_num_entries_ptr) See entry.
H5Freset_mdc_hit_rate_stats	herr_t H5Freset_mdc_hit_rate_stats(hid_t file_id) See entry.
H5Fset_mdc_config	herr_t H5Fset_mdc_config(hid_t file_id, H5AC_cache_config_t *config_ptr) See entry.
H5Pset_mdc_config	herr_t H5Pset_mdc_config(hid_t plist_id, H5AC_cache_config_t * config_ptr) See entry.
H5Pget_mdc_config	herr_t H5Pget_mdc_config(hid_t plist_id, H5AC_cache_config_t * config_ptr) See entry.
File read/write status
H5Fget_intent	herr_t H5Fget_intent( hid_t file_id, unsigned *intent ) See entry.
Arithmetic data transform on I/O
H5Pget_data_transform	herr_t H5Pget_data_transform( hid_t plist_id, char* expression, size_t size) See entry.
H5Pset_data_transform	herr_t H5Pset_data_transform( hid_t plist, const char* expression ) See entry.
Dataspace and datatype serial conversion
H5Sdecode	hid_t H5Sdecode( const void *buf ) See entry.
H5Sencode	herr_t H5Sencode( hid_t obj_id, void *buf, size_t *nalloc ) See entry.
H5Tdecode	hid_t H5Tdecode( const void *buf ) See entry.
H5Tencode	herr_t H5Tencode( hid_t obj_id, void *buf, size_t *nalloc ) See entry.
Enhanced filter management
H5Pget_filter2	herr_t H5Pget_filter2( hid_t plist_id, unsigned idx, unsigned int *flags, size_t *cd_nelmts, unsigned cd_values[], size_t namelen, char name[], unsigned *filter_config) See entry.
H5Pget_filter_by_id2	hid_t H5Pget_filter_by_id2( hid_t plist_id, H5Z_filter_t filter_id, unsigned int *flags, size_t *cd_nelmts, unsigned int cd_values[], size_t namelen, char name[], unsigned int *filter_config) See entry.
Comparison of properties
H5Pinsert2	hid_t H5Pinsert2( hid_t plid, const char *name, size_t size, void *