Circuit and method of converting a floating point number to a pr

Details Circuit and method of converting a floating point number to a pr Circuit and method of converting a floating point number to a pr

1995-07-10

2000-11-07

Moise, Emmanuel L.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708495, 341 50, 341 78, G06F 1500, G06F 700, G06F 738

Patent

active

061449776

ABSTRACT:
A programmable numeric converter (10) converts a floating point number to a fixed point format by selecting the proper offset. The mantissa is loaded with an implied value one into the least significant, or most significant, bits of the shifter (20). The programmable offset is added (24) to the exponent to determine the number of shifts to the mantissa bits. The number of bits of resolution necessary in the fixed point number is reduced because the offset can be programmed to move the decimal point to the left, or to the right, to provide accuracy wherever the significant digits are located. That is, the decimal point is moved left to provide more resolution in the fractional portion of the fixed point number for small numbers. Alternately, the decimal point is moved right to provide more resolution in the whole number portion of the fixed point number for large numbers.

REFERENCES:
patent: 5161117 (1992-11-01), Waggener, Jr.
patent: 5220589 (1993-06-01), Gard
patent: 5506797 (1996-04-01), Koshiba
patent: 5561615 (1996-10-01), Kuo et al.
patent: 5574672 (1996-11-01), Briggs
patent: 5619198 (1997-04-01), Blackham et al.

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