IEEE 854-1987
TheIEEE Standard for Radix-Independent Floating-Point Arithmetic(IEEE 854), was the firstInstitute of Electrical and Electronics Engineers(IEEE)international standardforfloating-point arithmeticwithradicesother than 2, including radix 10.[1]IEEE 854 did not specify any data formats, whereas IEEE 754-1985 did specify formats for binary (radix 2) floating point. IEEE 754-1985 and IEEE 854-1987 were both superseded in 2008 byIEEE 754-2008,[2]which specifies floating-point arithmetic for both radix 2 (binary) and radix 10 (decimal), and specifies two alternative formats for radix 10 floating-point values, and even more so withIEEE 754-2019.[3]IEEE 754-2008 also had many other updates to the IEEE floating-point standardisation.
IEEE 854 arithmetic was first commercially implemented in theHP-71Bhandheld computer, which used decimal floating point with 12 digits of significand, and an exponent range of ±499, with a 15 digit significand used for intermediate results.
References
[edit]- ^IEEE Standards Association (1987).854-1987: IEEE Standard for Radix-Independent Floating-Point Arithmetic.doi:10.1109/IEEESTD.1987.81037.ISBN0-7381-1167-8.
- ^"IEEE 754: Standard for Binary Floating-Point Arithmetic".IEEE Standards Association Working Group Site & Liaison Index.Archived fromthe originalon 19 April 2018.Retrieved21 September2011.
- ^"ANSI/IEEE Std 754-2019".754r.ucbtest.org.Retrieved6 August2019.
External links
[edit]- IEEE 854-1987– History and minutes