040000 tree 91c38f043979df3dcebc87f8fd27668ff819a7c8	binary_size
040000 tree eb49cdbba4bbd38033758d70a4b0bed4030e95bb	d3
040000 tree 2c62420d6a9ace7a6e0e3ee02b93a34e708b6e7c	double-conversion