A Directly Executable Encoding for APL

Abstract

A canonical internal form for APL is derived.A directly executable language (ADEL) follows DEL principles first developed by Flynn and Hoevel.APL usage statistics are reported and used to help determine an efficient encoding strategy.Two execution models are discussed.The models show that for a vector-oriented host machine, the use of expression temporaries may be ~nore efficient, not less efficient as expected for a scalar-oriented host.