A to Z Reference

This section contains the following:

• Language Summary Tables

  This section organizes the functions, subroutines, and statements available in Visual Fortran by the operations they perform. You can use the tables to locate a particular routine for a particular task.

• The descriptions of all Visual Fortran statements and intrinsics, which are listed in alphabetical order.

  In the description of routines, pointers and handles are INTEGER(4) on ia32 processors and INTEGER(8) on ia64 processors.

Remember that REAL(16) and COMPLEX(16) are only available on OpenVMS, Tru64 UNIX, and Linux systems.

The Fortran compiler understands statements and intrinsic functions in your program without any additional information, such as that provided in modules.

However, modules must be included in the following types of programs:

• Programs that contain run-time or graphics functions and subroutines must specifically include the Visual Fortran library and graphics modules with the USE DFLIB statement.
  
  
• Programs that contain Portability procedures must access the Portability library with the USE DFPORT statement.
  
  
• Programs that use NLS procedures must access the NLS library with the USE DFNLS statement.
  
  
• Programs that use Dialog procedures must access the Dialog library with the USE DFLOGM statement.
  
  
• Programs that use Component Object Module (COM) and Automation servers must access the appropriate libraries with the USE DFCOM or USE DFAUTO statement, whichever is appropriate.

Whenever required, these USE module statements are prominent in the A to Z Reference.

In addition to the appropriate USE statement, you must specify the types of libraries to be used when linking:

• When using the visual development environment, the project type selected and the project settings in the Libraries category (see Categories of Compiler Options) determine the libraries linked against. Also see Errors During the Build Process.
  
  
• When using the command line (DF command), see Using the Compiler and Linker from the Command Line and Categories of Compiler Options (especially the options under the Libraries category).