110481 IFTRAN Precompiler for PDP-11 FORTRAN Version: March 1981 Author: Bruce R. Mitchell, Dr. Donald L. Dietmeyer Submitted by: Bruce R. Mitchell, ES & T Labs, St Paul, MN Operating System: RSX-11 Rntime Sys.under RSTS/E, RSX-11 emulator under VAX/VMS, RSX-11M V3.2 Source Language: FORTRAN IV, MACRO-11 Memory Required: l6K Keywords: Compilers, FORTRAN Abstract: IFTRAN is an extension of the basic set of instructions to the FORTRAN programming language. The addition of four simple types of clauses (IF, DO-UNTIL, WHILE, and FOR) to FORTRAN allows the writing of structured programs. Features of IFTRAN include OR IF and ELSE subclauses, loop exits on logical conditions, multiple statements on a single line, inline comments, optional pass-through of full-line comments to the output FORTRAN file, listing control, and "PRETTY-printed" listings. IFTRAN avoids much of the unused richness of most structured FORTRAN compilers in favor of quick translation of an easily learnable and practical set of extensions. Notes: Should run under any RSX emulator incorporating features of RSX-11M V3.2. Restrictions: Bootstrap precompiler does not produce as extensive diagnostics as the IFTRAN precompiler. Media (Service Charge Code): User's Manual (EB), 600' Magnetic Tape (MA) Format: DOS OR ANSI MEDIA FORMAT MUST BE SPECIFIED ON ORDER FORM