DEC-10-AFC0-D PDP-10 FORTRAN IV Programming Manual Aug69

This document is the PDP-10 FORTRAN IV Programmer's Reference Manual by Digital Equipment Corporation, published between 1967 and 1969.

It serves as a detailed reference guide for the specific statements and features of the FORTRAN IV language as implemented on the PDP-10 computer system, adhering to USA Standard FORTRAN. The manual assumes the reader has prior familiarity with basic FORTRAN programming concepts.

Key areas covered include:

• Language Fundamentals: Line format, character set, various types of constants (integer, real, double precision, octal, complex, logical, literal), scalar and array variables, and the formation of numeric and logical expressions.
• Statement Types: Comprehensive descriptions of arithmetic, control (e.g., GO TO, IF, DO, PAUSE, STOP), input/output (e.g., FORMAT, NAMELIST, READ, WRITE, PRINT), and specification statements (e.g., DIMENSION, COMMON, EQUIVALENCE, DATA, type declarations).
• Subprograms: Details on arithmetic function definitions, function subprograms, and subroutine subprograms, including dummy identifiers and external declarations.
• Appendices: Summarize all PDP-10 FORTRAN IV statements, list library functions and subroutines, describe the PDP-10 operating system's interaction with FORTRAN IV, highlight differences from FORTRAN II, and provide compiler diagnostics.