Floating-point addition/subtraction system with digit position a

Details Floating-point addition/subtraction system with digit position a Floating-point addition/subtraction system with digit position a

1988-05-31

1991-05-14

Malzahn, David H.

Boots, shoes, and leggings

G06F 750

Patent

active

050162098

ABSTRACT:
A system of floating-point addition/subtraction for two sets of data includes a first shifting control data generating unit, a second shifting control data generating unit, a first shifting unit, and a second shifting unit. The first shifting control data generating unit generates a shifting control data based on a comparison between the lower bits of the characteristics of the two sets of data. The second shifting unit generates a shifting control data based on a comparison between the entire bits of the characteristics of the two sets of data. The digit position alignment between the fractions of the two sets of data is attained by carrying out the shifting control data generation in parallel with the shifting operation.

REFERENCES:
patent: 3551665 (1970-12-01), Powers et al.
patent: 4488252 (1984-12-01), Vassar
patent: 4534010 (1985-08-01), Kobayashi et al.
patent: 4562553 (1985-12-01), Mattedi et al.
Levine, "Fraction Addition or Subtraction or Comparison Overlap with Characteristic Comparison" IBM Tech. Disclosure Bulletin vol. 15, No. 7, Dec. 1972, p. 2162.

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