Method and apparatus for exact leading zero prediction for a floating-point adder
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United States of America Patent
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Apr 20, 1993
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app pub date -
Aug 30, 1991
filing date -
Aug 30, 1991
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Abstract
A leading zero predictor (LZP) in parallel with the full subtraction operation correctly predicts the exact number of leading zeros of a subtraction result. Once the full subtraction operation is completed, the necessary shifts may be performed immediately, without a delay to determine the presence of leading zeros, and without need for a normalization corrector.
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