Operation unit with an error amount calculating circuit for outp

Details Operation unit with an error amount calculating circuit for outp Operation unit with an error amount calculating circuit for outp

1986-05-07

1988-12-06

Harkcom, Gary V.

Boots, shoes, and leggings

364736, 364748, G06F 738

Patent

active

047899557

ABSTRACT:
An operation unit includes a first unit for calculating input data and for outputting an error data indicating an error generated as a result of the calculation by using such a mantissa data at a lower order as has been obtained midway of the calculation but is not used as an output result data; and a second unit for outputting error data of the calculation result data from the first-named error data and error data input accompanying the input data.

REFERENCES:
patent: 4562553 (1985-12-01), Mattedi et al.
L. H. Thomas, "Round-Off Errors and Machine Comuting", IBM Technical Disclosure Bulletin, vol. 4, No. 11, Apr. 1962, p. 37.

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