This manual describes the Fortran 77 language specifications as implemented using the MIPSpro Fortran 77 compiler. This implementation of FORTRAN 77 contains full American National Standard Institute (ANSI) Programming Language Fortran (X3.9-1978). It has extensions that provide full VMS Fortran compatibility to the extent possible without the VMS operating system or VAX data representation. It also contains extensions that provide partial compatibility with programs written in SVS Fortran.
The following documents contain additional information that may be helpful:
The MIPSpro Fortran 77 Programmer's Guide provides a description of the Silicon Graphics MIPSpro Fortran 77 compiler.
The MIPSpro Compiling and Performance Tuning Guide provides information about improving program performance by using the optimization facilities of the compiler system, the dump utilities, archiver, debugger, and the tools used to maintain Fortran programs.
The MIPSpro 64-Bit Porting and Transition Guide provides an overview of the 64-bit compiler system and language implementation differences, porting source code to the 64-bit system, compilation and run-time issues.
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The following conventions are used throughout this document:
| Convention | Meaning | |
| command | This fixed-space font denotes literal items such as commands, files, routines, path names, signals, messages, and programming language structures. | |
| variable | Italic typeface denotes variable entries and words or concepts being defined. | |
| user input | This bold, fixed-space font denotes literal items that the user enters in interactive sessions. Output is shown in nonbold, fixed-space font. | |
| [ ] | Brackets enclose optional portions of a command or directive line. | |
| ... | Ellipses indicate that a preceding element can be repeated. |
The default shell in the UNICOS and UNICOS/mk operating systems, referred to as the standard shell, is a version of the Korn shell that conforms to the following standards:
Institute of Electrical and Electronics Engineers (IEEE) Portable Operating System Interface (POSIX) Standard 1003.2-1992
X/Open Portability Guide, Issue 4 (XPG4)
The UNICOS and UNICOS/mk operating systems also support the optional use of the C shell.
Cray UNICOS Version 10.0 is an X/Open Base 95 branded product.
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