High speed compilation of efficient object code
August 1965 - Vol. 8 No. 8
Features
A three-pass compiler with the following properties is briefly described: The last two passes scan an intermediate language produced by the preceding pass in essentially…
Symbolic derivatives without list processing, subroutines, or recursion
A routine has been developed which computes and prints out the symbolic derivative of an absolutely continuous elementary function of one or several variables. No use is…
Some techniques used in the ALCOR ILLINOIS 7090
An ALGOL compiler has been written by the ALCOR group for the IBM 7090. Some little known but significant techniques in compiler writing, together with organizational…
Some experiments in algebraic manipulation by computer
A set of subroutines to allow algebraic manipulations on the IBM 7094 computer has been written using a List Processor, SLIP.…
The use and implementation of two new FORTRAN format conversions are discussed. These format types give the FORTRAN programmer control of input/output specifications at…
Nonlinear extrapolation and two-point boundary value problems
It is suggested that the convergence properties of the usual Picard successive approximation scheme may be improved through use of nonlinear extrapolation techniques. A…
A method for storing strings is described which uses blocks of indefinite size, and is therefore completely dynamic. Its relation to similar schemes is discussed.
This note describes some FORTRAN subroutines to facilitate handling of tape files. They allow symbolic naming or information files, without violating the casual…
Negative and zero subscripts in Fortran II programming for the IBM 1620
The requirement that subscripts be unsigned integers creates some inconvenience in FORTRAN programming for summarization of completed questionnaires in which the…
Simulation of computer logic by Fortran arithmetic
During the preliminary logical design of the NEBULA computer for the Oregon State University Department of Mathematics, it was decided to simulate the logic equations on…
Remarks on simulation of Boolean functions
Recently M. Morris Mano presented a method for performing Boolean OR, AND and NOT operations by means of arithmetic and conditional transfer operations in a decimal…
The self-judgment method of curve fitting
A computer-oriented method for processing and communicating numerical data is described. The Instrument Reliability Factors (IRF), which exactly define the limits of…