Source : Free On-Line Dictionary of Computing

IMPlementation language
     
         (IMP) An extension of {B} with {floating-point}
        operations, developed by W. Davidsen at {General Electric} in
        1970 for the {GE 600}.  It was also {cross-compiled} to {VAX}
        and {Intel 8080}.
     
        (1996-04-07)