IBM’s XL FORTRAN (Release 2) compiler supports the ANSI FORTRAN 77 programming language, with SAA, VS FORTRAN, RT PC FORTRAN, and RT VS FORTRAN extensions. The compiler is invoked with:
% xlf [option] filename
If the ‘xlf’ command is given without options or a filename, a description of the compiler and its options is displayed on the screen.
Several hundred mathematical and statistical subroutines are available on ACS via IMSL, the International Mathematical and Statistical Libraries.
For information on XL FORTRAN, see the online manual page; type man xlf. Additional documentation may be found in the IBM Documentation Library.