|
IEEE 754-2008 (previously known as ''IEEE 754r'') was published in August 2008 and is a significant revision to, and replaces, the IEEE 754-1985 floating point standard. The revision extended the previous standard where it was necessary, added decimal arithmetic and formats, tightened up certain areas of the original standard which were left undefined, and merged in IEEE 854 (the radix-independent floating-point standard). In a few cases, where stricter definitions of binary floating-point arithmetic might be performance-incompatible with some existing implementation, they were made optional. == Revision process == The standard had been under revision since 2000, with a target completion date of December 2006. The revision of an IEEE standard broadly follows three phases: #Working group – a committee that creates a draft standard #Ballot – interested parties subscribe to the ''balloting group'' and vote on the draft (75% of the group must participate, and 75% must approve for the draft to go forward); comments from the votes are resolved by a ''Ballot Resolution Committee'' (BRC) and changes made have to be recirculated with a new ballot if they are substantive #When all comments are resolved and there are no further changes, the draft is submitted to the IEEE for review, approval, and publication (this can also result in changes and ballots, although this is rare). On 11 June 2008, it was approved unanimously by the IEEE Revision Committee (RevCom), and it was formally approved by the IEEE-SA Standards Board on 12 June 2008. It was published on 29 August 2008. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IEEE 754 revision」の詳細全文を読む スポンサード リンク
|