Method and apparatus for calculating floating point exponent val

Details Method and apparatus for calculating floating point exponent val Method and apparatus for calculating floating point exponent val

1995-09-18

1996-07-23

Malzahn, David H.

Boots, shoes, and leggings

G06F 752, G06F 7552

Patent

active

055396844

ABSTRACT:
A data processing system (10) has a circuit for determining floating point exponents for divide operations and square root operations. The circuit has two input multiplexers (26 and 28) which provide exponent information or constants to an adder (30). The exponent information and constants are processed by the adder (30) to output three possible exponent values for either a divide operation or a square root operation. The three possible exponent values are stored in three registers (34, 36, and 38). A multiplexer (40) used mantissa rounding and normalizing information to determine which exponent of the three possible exponent values are correct for the current floating point calculation.

REFERENCES:
patent: 4975868 (1990-12-01), Freerksen
patent: 5150320 (1992-09-01), Nakayama
patent: 5166898 (1992-11-01), Ishihara
patent: 5204828 (1993-04-01), Kohn
patent: 5341321 (1994-08-01), Karp et al.
patent: 5373461 (1994-12-01), Bearden et al.

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