Write _length_ bytes directly to the underlying stream without
compressing. Bypasses BGZF blocking, so must be used with care
in specialised circumstances only.
@param fp BGZF file handler
@param data data array to write
@param length number of raw bytes to write
@return number of bytes actually written; -1 on error
Write _length_ bytes directly to the underlying stream without compressing. Bypasses BGZF blocking, so must be used with care in specialised circumstances only.
@param fp BGZF file handler @param data data array to write @param length number of raw bytes to write @return number of bytes actually written; -1 on error