Method and apparatus for performing microprocessor integer divis

Details Method and apparatus for performing microprocessor integer divis Method and apparatus for performing microprocessor integer divis

1996-07-25

1998-06-16

Mai, Tan V.

Boots, shoes, and leggings

G06F 744

Patent

active

057681708

ABSTRACT:
A method and apparatus for efficiently generating multiple integer quotients of integer numerators divided by a common integer denominator are implemented by multiplying a floating point approximation of the reciprocal of the integer denominator by floating point representations of the numerators, biasing the floating point quotients before rounding up or down as required. First, an initial approximation of the reciprocal of the denominator is computed (102) by squaring (114) a limited precision square root of the reciprocal (112). A final reciprocal is computed using a finite power series (104). Finally, modified numerators are formed (106) by biasing the original numerators, products of the modified numerators multiplied times the reciprocal are computed, and the products are rounded up or down as required (108).

REFERENCES:
patent: 5249149 (1993-09-01), Cocanougher et al.
patent: 5309353 (1994-05-01), Kuroiwa
patent: 5563818 (1996-10-01), Agarwal et al.

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