H5LDget_dset_elmts

herr_t H5LDget_dset_elmts(hid_t did,  const  hsize_t *  prev_dims,
       const  hsize_t *  cur_dims,  const  char *  fields,  void *  buf)

Gets elements from a dataset.

Reads elements from a dataset starting at specified coordinates. This function is optimized for reading newly added data from an extended dataset.

`did`	Dataset identifier
`prev_dims`	Previous dimensions (starting point)
`cur_dims`	Current dimensions (ending point)
`fields`	Comma-separated list of field names for compound types, or NULL for entire elements
`buf`	Buffer to receive the data

Non-negative on success, negative on failure.