FORTRAN Reference Manual
FORTRAN Reference Manual—528615-001
xix
About This Manual
This manual describes the HP implementation of the full ANSI FORTRAN 77 (X3.9-
1978) language. It also describes HP extensions that optimize FORTRAN for the 
transaction-oriented, fault-tolerant environment. All HP extensions provide capabilities 
beyond those stated in the FORTRAN standard.
Who Should Use This Manual
This manual is for system and application programmers.
Manual Organization
Table i. Summary of Contents  (page 1 of 2)
Section Title This section . . .
1 Summary of HP Extensions
An introduction to FORTRAN. If you are 
thoroughly familiar with FORTRAN, you need 
read only the description of RECORD 
structures in Section 2, Language Elements 
and in Section 5, Introduction to File I/O in the 
HP NonStop Environment.
2 Language Elements
3 Expressions
4 Program Units
5 Introduction to File I/O in the 
HP NonStop Environment
6 Introduction to Statements
7 Statements Language statements and intrinsic functions.
8 Intrinsic Functions
9 Intrinsic Functions Using compiler directives and compiling and 
running FORTRAN programs.
10 Compiler Directives
11 Running and Debugging 
Programs
12 Memory Organization Using features of the HP FORTRAN 
environment.
13 Mixed-Language Programming
14 Interprocess Communication
15 Utility Routines
16 Fault-Tolerant Programming
A ASCII Character Set Lists ASCII characters.
B Syntax Summary
Provides a syntax summary for FORTRAN 
statements and compiler directives.
C Converting Programs to 
HP FORTRAN
Contains suggestions to convert a FORTRAN 
application program that was not written for 
HP FORTRAN to the syntax and semantics of 
HP FORTRAN.










