6 Predefined Macros and Built-In Functions

This chapter describes the following topics:

• Predefined macros (Section 6.1)

• Built-in functions (Section 6.2)

  • For OpenVMS Alpha systems (Alpha only) (Section 6.2.1)

  • For OpenVMS VAX systems (VAX only) (Section 6.2.2)

Predefined macros and built-in functions are extensions to the ANSI C Standard and are specific to DEC C for OpenVMS Systems. The macros assist in transporting code and performing simple tasks that are common to many programs. The built- in functions allow you to efficiently access processor instructions.