H5Tenum_valueof finds the value that corresponds to the specified
name of the enumeration datatype
Values returned in
value will be of the enumerated type’s base type, that is, the datatype used by
H5Tenum_create when the enumerated type was created.
value buffer must be at least large enough to hold a value of that base type. If the size is unknown, you can determine it with
dtype_id is set to the base type.