Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2005-12-20
2005-12-20
Malzahn, D. H. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S270000
Reexamination Certificate
active
06978289
ABSTRACT:
An apparatus and method are disclosed for minimizing accumulated rounding errors in coefficient values in a lookup table for interpolating polynomials. Unlike prior art methods that individually round each polynomial coefficient of a function, the method of the present invention use a “ripple carry” rounding method to round each coefficient using information from the previously rounded coefficient. The “ripple carry” method generates rounded coefficients that significantly improve the total rounding error for the function.
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