Use of LISP systems in FORTRAN programs : its implementation and applications

Recent improvements in computers have produced various hybrid methods of numerical and non-numerical (symbolic) computation, to offer efficient means for program development. Some researches on such hybrids using coroutines or parallel computation are being conducted to combine Fortran and Lisp to provide advanced functionality by supplementing their shortcomings with each other. These methods, however, often require compiler reconstruction or premature processing methods and seem to be far from practical. This paper describes a prototype developed for simplified hybrid computation to employ a Lisp interpreter as a subroutine of Fortran programs. Its applications to 2-dimensional thermal conduction analysis using FEM and a finite integral problem are also presented