B.1. Implementation definition

Appendix G of the ISO C standard (IS/IEC 9899:1990 (E)) collates information about portability issues. Subclause G3 lists the behavior that each implementation must document.


This appendix does not duplicate information that is part of the compiler-specific implementations. See Compiler-specific features. This section provides references where applicable.

The following subsections correspond to the relevant sections of subclause G3. They describe aspects of the ARM C compiler and ANSI C library, not defined by the ISO C standard, that are implementation-defined:

Nonconformance with ANSI

The compiler behavior differs from the behavior described in the language conformance sections of the C standard in that there is no support for the wctype.h and wchar.h headers.

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