H5Tget_fields

herr_t H5Tget_fields(hid_t type_id,  size_t *  spos,  size_t *  epos,
       size_t *  esize,  size_t *  mpos,  size_t *  msize)

Gets the floating-point datatype bit field information.

`type_id`	Datatype identifier
`spos`	Pointer to receive sign bit position
`epos`	Pointer to receive exponent bit position
`esize`	Pointer to receive exponent size in bits
`mpos`	Pointer to receive mantissa bit position
`msize`	Pointer to receive mantissa size in bits

Non-negative on success, negative on failure.