FORTRAN Preprocessor Compiler Directives

The FORTRAN preprocessor supports the following compiler directives:

The $IF directive does not support logical operators. (Note that the compiler and preprocessor may not support the same things.) Only simple TRUE and FALSE logical variables are supported. If the $INCLUDE directive is used and the user include file contains embedded SQL commands, there cannot be duplicate host variable type declaration sections. The program unit being preprocessed and the file that is included cannot both contain BEGIN DECLARE SECTION and END DECLARE SECTION commands. However, one or the other may contain a host variable type declaration section.

The $ must be the first character in the line, and must be followed by any compiler directives. For the Series 900, refer to the HP FORTRAN 77/XL Reference Manual for MPE XL on HP 3000 Series 900 Computers (Part Number 31501-90010) for more information on FORTRAN compiler directives.