4.1 C Standard Compliance

This compiler is a freestanding implementation that conforms to the ISO/IEC 9899:1990 Standard (referred to as the C90 standard) as well the ISO/IEC 9899:1999 Standard (C99) for programming languages. The program standard can be selected using the -std option (see 3.6.3.9 Std Option).

This implementation makes no assumptions about any underlying operating system and does not provide support for streams, files, or threads. Aspects of the compiler that diverge from the standards are discussed in this section.