Sticky bit detector for a floating-point processor

Details Sticky bit detector for a floating-point processor Sticky bit detector for a floating-point processor

1998-01-28

1999-02-02

Rowler, Alyssa H.

Boots, shoes, and leggings

39580032, 36471503, 36474805, 36474816, 36475401, 36475411, G06F 1300

Patent

active

058677224

ABSTRACT:
A floating-point processor and method detect a sticky bit during a floating point operation. The floating-point processor includes a sticky bit predictor circuit, a bit scanner, an exponent arithmetic circuit, and a mantissa arithmetic logic circuit. Input and output circuitry allow the floating-point processor to communicate with another processor. The bit scanner generates sticky significance values corresponding to the operands. When adding two operands, the sticky bit predictor circuit compares the sticky significance value of the smaller operand with an alignment value in order determine whether to set the sticky bit.

REFERENCES:
patent: Re33629 (1991-07-01), Palmer et al.
patent: 4338675 (1982-07-01), Palmer et al.
patent: 4367524 (1983-01-01), Budde et al.
patent: 4484259 (1984-11-01), Palmer et al.
patent: 4777613 (1988-02-01), Shahan et al.
patent: 4928259 (1990-05-01), Galbi et al.
patent: 5010508 (1991-04-01), Sit et al.
patent: 5027308 (1991-06-01), Sit et al.
patent: 5036482 (1991-07-01), Saini
patent: 5157777 (1992-10-01), Lai et al.
patent: 5195051 (1993-03-01), Palaniswami
patent: 5204828 (1993-04-01), Kohn
patent: 5235533 (1993-08-01), Sweedler
patent: 5257215 (1993-10-01), Poon
patent: 5258943 (1993-11-01), Gamez et al.
patent: 5260889 (1993-11-01), Palaniswami
Double-Precision Floating Point Processor-Users Manual 1988/9, Advanced Micro Devices, Inc., Chapter 3 (pp. 3-1 to 3-32), Sunnyvale California, Copyright 1988.
Neil H.E. Weste, et al., Principals of CMOS VLSI Design, A Systems Perspective, Addison-Wesley Publishing Company, 1985, pp310-338.
Mckinney et al., A Multiple-access Pipeline Architecture of Digital Signal Processing:, IEEE, pp 283-290, Mar. 1988.
Lange, et al., "An Optima Floating-Point Pipeline CMOS CORDIC Processor"IEEE, pp 2043-2047, 1988.
Snyder, et al., "100 MegaFlop Double Precision IEEE Multiplier Block for Advanced Bipolar VLSI", IEEE, pp. 17.4.1-17.4.3, 1988.

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