Language Reference

Standards Documents

XL Fortran is designed according to the following standards documents. You may want to refer to these standards for precise definitions of some of the features referred to in this book.

1. American National Standard Programming Language FORTRAN, ANSI X3.9-1978.
2. American National Standard Programming Language Fortran 90, ANSI X3.198-1992. (This book uses its informal name, Fortran 90. This standard is equivalent to the ISO standard listed in point 5 below.)
3. ANSI/IEEE Standard for Binary Floating-Point Arithmetic, ANSI/IEEE Std 754-1985.
4. Information technology - Programming languages - Fortran, ISO/IEC 1539-1:1991 (E).
5. Information technology - Programming languages - Fortran - Part 1: Base language, ISO/IEC 1539-1:1997. (This book uses its informal name, Fortran 95.)
6. Information technology - Programming languages - Fortran - Floating-Point Exception Handling, ISO/IEC JTC1/SC22/WG5 N1379.
7. Information technology - Programming languages - Fortran - Enhance Data Type Facilities, ISO/IEC JTC1/SC22/WG5 N1378.
8. Military Standard Fortran DOD Supplement to ANSI X3.9-1978, MIL-STD-1753 (United States of America, Department of Defense standard). Note that XL Fortran supports only those extensions documented in this standard that have also been subsequently incorporated into the Fortran 90 standard.
9. OpenMP Fortran Language Application Program Interface, Version 2.0 (Nov 2000) specification.