Ada Programming/Attributes/'Bit Order:3

The 'Bit_Order attribute is not intended to convert data between a big-endian and a little-endian machine (it affects bit numbering, not byte order). The compiler will not generate code to reorder multi-byte fields when a non-native bit order is specified.^[1]^[2]^[3]

References

↑ AI95-00133-01 (1996-05-07). "Controlling bit ordering". Class: binding interpretation. Ada Rapporteur Group. Bit_Order clauses are concerned with the numbering of bits and not concerned with data flipping interoperability.
↑ ISO/IEC 8652:2007. "13.5.3 Bit Ordering (9/2)". Ada 2005 Reference Manual. Retrieved 2008-06-02. Bit_Order clauses make it possible to write record_representation_clauses that can be ported between machines having different bit ordering. They do not guarantee transparent exchange of data between such machines. {{cite book}}: Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)
↑ Thomas Quinot (2013). "Gem #140: Bridging the Endianness Gap". AdaCore. Retrieved 2013-01-31. the order in which the bytes that constitute machine scalars are written to memory is not changed by the Bit_Order attribute -- only the indices of bits within machine scalars are changed. {{cite web}}: Unknown parameter |month= ignored (help)

[1] AI95-00133-01 (1996-05-07). "Controlling bit ordering". Class: binding interpretation. Ada Rapporteur Group. Bit_Order clauses are concerned with the numbering of bits and not concerned with data flipping interoperability.

[2] ISO/IEC 8652:2007. "13.5.3 Bit Ordering (9/2)". Ada 2005 Reference Manual. Retrieved 2008-06-02. Bit_Order clauses make it possible to write record_representation_clauses that can be ported between machines having different bit ordering. They do not guarantee transparent exchange of data between such machines. {{cite book}}: Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)

[3] Thomas Quinot (2013). "Gem #140: Bridging the Endianness Gap". AdaCore. Retrieved 2013-01-31. the order in which the bytes that constitute machine scalars are written to memory is not changed by the Bit_Order attribute -- only the indices of bits within machine scalars are changed. {{cite web}}: Unknown parameter |month= ignored (help)

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