c074856_ISO_IEC_8825-7_2015_Cor_2_2017.pdf

ICS 35.100.70 Ref. No. ISO/IEC 8825-72015/Cor.22017E ISO/IEC 2017 – All rights reserved Published in Switzerland INTERNATIONAL STANDARD ISO/IEC 8825-72015 TECHNICAL CORRIGENDUM 2 Published 2017-11 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ ORGANISATION INTERNATIONALE DE NORMALISATION INTERNATIONAL ELECTROTECHNICAL COMMISSION МЕЖДУНАРОДНАЯ ЭЛЕКТРОТЕХНИЧЕСКАЯ КОМИССИЯ COMMISSION LECTROTECHNIQUE INTERNATIONALE Ination technology ASN.1 encoding rules Part 7 Specification of Octet Encoding Rules OER TECHNICAL CORRIGENDUM 2 Technologies de lination Rgles de codage ASN.1 Partie 7 Spcification des rgles de codage des octets OER RECTIFICATIF TECHNIQUE 2 Technical Corrigendum 2 to ISO/IEC 8825-72015 was prepared by Joint Technical Committee ISO/IEC JTC 1, Ination technology, Subcommittee SC 6, Telecommunications and ination exchange between systems, in collaboration with ITU-T. The identical text is published as Rec. ITU-T Rec.X696 2015/Cor.1 2017. Technical Corrigendum 2 to ISO/IEC 8825-72015 cancels and replaces ISO/IEC 8825-72015/Cor.12017, which did not contain the correct document reference number. ISO/IEC 8825-72015/Cor.22017E ISO/IEC 2017 - All rights reserved1 INTERNATIONAL STANDARD ITU-T RECOMMENDATION Ination technology – ASN.1 encoding rules Specification of Octet Encoding Rules OER Technical Corrigendum 2 Conventions used in this corrigendum Original, unchanged, text is in normal font. Deleted text is struck-through, thus deleted text. Inserted text is underlined, thus inserted text. 1 Clause 12.2 Replace clause 12.2 with the following If all of the following are true athe lower bound of the effective value constraint of the mantissa is greater than or equal to −224 1 −16777215 and its upper bound is less than or equal to 224 − 1 16777215; bthe effective value constraint of the base is the fixed value 2; and cthe lower bound of the effective value constraint of the exponent is greater than or equal to −323126 and its upper bound is less than or equal to 292127, then the real value shall be encoded in the binary32 single precision floating-point at specified in IEEE 754. 2 Clause 12.3 Replace clause 12.3 with the following 12.3 Otherwise, if all of the following are true athe lower bound of the effective value constraint of the mantissa is greater than or equal to −253 1 −9007199254740991 and its upper bound is less than or equal to 253 − 1 9007199254740991; bthe effective value constraint of the base is the fixed value 2; and cthe lower bound of the effective value constraint of the exponent is greater than or equal to −10741022 and its upper bound is less than or equal to 9711023, then the real value shall be encoded in the binary64 double precision floating-point at specified in IEEE 754. 3 Clause 16.1 Replace clause 16.1 with 16.1 The encoding of a sequence value shall consists of the following parts, in order apreamble; bencodings of the components in the extension root; cextension addition presence bitmap optional; and dencodings of the extension additions optional. NOTE – Each of these parts occupies a whole number of octets. 4 Clause 18.1 Replace clause 18.1 with 18.1 The value of a set type shall be encoded as if the type had been declared a sequence type, except that the components in the “RootComponentTypeList“ of the set type as well as the preamble bits shall be encoded in the order specified in 18.2. ISO/IEC 8825-72015/Cor.22017E 2 ISO/IEC 2017 - All rights reserved 5 Clause 20.1 Add Note 3 at the end of clause 20.1 NOTE 3 – If the type of the choice alternative is an untagged choice type, the outermost tag for that alternative will appear more than once in the encoding. This is different from how BER works.