1.4 ISO C99

The compiler compiles ISO C99 C and also supports ARM extensions to ISO C99.

The compiler compiles C as defined by the 1999 C standard and addenda:
  • ISO/IEC 9899:1999. The 1999 International Standard for C.
  • ISO/IEC 9899:1999/Cor 2:2004. Technical Corrigendum 2.
The compiler also supports several extensions to ISO C99.
Throughout this document, the term:
Means ISO C99, together with the ARM extensions.
Use the compiler option --c99 to compile C99 code.
Strict C99
Means C as defined by the 1999 C standard and addenda.
Use the compiler options --c99 --strict to compile strict C99 code.
Standard C
Means C90 or C99 as appropriate.
Means any of C90, strict C90, C99, strict C99, and Standard C.
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