vle-write-int64-be

(vle-write-int64-be fptr value)

writes a "signed integer 54 bit" to file (same as C++ "longlong / int64" type), for data stored in "Big Endian" byte sequence

Arguments	fptr file pointer as returned by (open <filename> "rb") value Lisp integer value to write to file (must be in 64 bit range)
Return	value, if successful, NIL otherwise