IMPlementation language

from The Free On-line Dictionary of Computing (8 July 2008)

IMPlementation language

   <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)