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 29124:2010 is available from ISO and IEC in English only. CSA will publish the French version when it becomes available from ISO and IEC. Scope 1.1 Purpose and intent [scope.purpose] This International Standard specifies extensions to the C++ standard library as defined in the International Standard for the C++ programming language [ISO/IEC 14882:2003]. 1.2 Relation to C++ Standard Library Introduction [scope.libintro] Unless otherwise specified, the whole of Clause 17 ("Library Introduction") of the ISO C++ Standard [ISO/IEC 14882:2003] is included into this International Standard by reference. 1.3 Categories of extensions [scope.ext] This International Standard specifies extensions to the C++ standard library to support mathematical special functions.