CAN/CSA-ISO/IEC TR 18037-05

Preface

Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC.

Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).

At the time of publication, ISO/IEC TR 18037:2004 is available from ISO and IEC in English only. CSA will publish the French version when it becomes available from ISO and IEC.

Scope

Each clause in this Technical Report deals with a specific topic. The first subclauses of clauses 4, 5 and 6 contain a technical description of the features of the topic.

These subclauses provide an overview but do not contain all the fine details. The last subclause of each clause contains the editorial changes to ISO/IEC 9899:1999 necessary to fully specify the topic in ISO/IEC 9899:1999, and thereby provides a complete definition. Additional explanation and rationale are provided in the Annexes.

This Technical Report specifies a series of extensions of the programming language C (as specified by ISO/IEC 9899:1999) to support features commonly found in embedded processors. It deals with the following topics: extensions to support fixed-point arithmetic, named address spaces, and basic I/O hardware addressing.