Data processor and data processing system

Details Data processor and data processing system Data processor and data processing system

1997-10-15

2000-03-14

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708505, 708507, G06F 738, G06F 742

Patent

active

060385820

ABSTRACT:
A data processor includes an arithmetic portion incorporated in a floating point unit, in which the arithmetic portion includes a plurality of multipliers supplied mantissa part of floating point number from respectively different data input signal line group and performing mutual multiplication of supplied mantissa parts, an aligner receiving outputs of respective multipliers and performing alignment shift, an exponent processing portion for generating number of alignment shift of the aligner and an exponent before normalization on the basis of generation an exponent part of the floating point number, a multi-input adder and the exponent before normalization, reducing scale of the circuit and performing inner product operation and the like with the floating point numbers in high speed and high accuracy.

REFERENCES:
patent: 4969118 (1990-11-01), Montoye et al.
patent: 5359548 (1994-10-01), Yoshizawa et al.
patent: 5757686 (1998-05-01), Naffziger et al.
Microprocessor Report, vol. 8 No. 15, Nov. 14, 1994, pp. 6-9.
Nikkei Electronics Jan. 15, 1996 (No. 653) pp. 16-17.
Technical Report of IEICE, ICD94-135, DSP 94-91 (Oct. 1994) pp. 73-79.

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