To replace the withdrawn standards ANSI/IEEE 754-1985 and 854-1987, an IEEE 754R working group of about 150 mailing list members, of which 30-40 were active voting members, developed a draft standard 1.2.5 for Floating-Point Arithmetic. The 754R working group recommended that draft to the IEEE Microprocessor Standards Committee on September 21, 2006. This working group thereby completed its labors and is now dissolved.
After further editing by IEEE, MSC referred a revised draft 1.2.6, dated 28 November 2006, to a Sponsor Ballot group.
A Ballot Review Committee of 7 members reviewed hundreds of comments submitted with votes, and initiated recirculation ballots with subsequent revised drafts 1.3.0 though 1.9.0 dated 24 April 2008. Closing date for comments on 1.9.0 was 5 May 2008. My comments on draft 1.9.0 are here.
The Ballot Review Committee reviewed comments received, made no further changes, and the 1.9.0 draft has been approved as an IEEE standard. Questions about the process and status should be directed to the MSC chair, Bob Davis, bob AT scsi.com.
The last 754R Working Draft 1.2.5, submitted to MSC, was dated 12:44 October 4, 2006. This draft was not the draft 1.2.6 approved by the Sponsor Ballot group. 754R working drafts were maintained with OpenOffice 2.0.4 available from openoffice.org.
The 754R working group records are here:
A variety of mechanisms were utilized for developing and deciding upon proposed changes to the 754R working draft.
The base document was the technical content of ANSI/IEEE Std 754-1985. The base document, which did not change as a result of the 754R process, is available in various formats:
Some aspects of 754R were derived from ANSI/IEEE Std 854-1987, IEEE Standard for Radix-Independent Floating-Point Arithmetic:Differences between 754 and 854 are summarized here.
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