Abstract
A faithfully rounded truncated multiplier design is presented where the maximum absolute error is guaranteed to be no more than 1 unit of least position. The proposed method jointly considers the deletion, reduction, truncation, and rounding of partial product bits in order to minimize the number of full adders and half adders during tree reduction. Experimental results demonstrate the efficiency of the proposed faithfully truncated multiplier with area saving rates of more than 30%. In addition, the truncated multiplier design also has smaller delay due to the smaller bit width in the final carry-propagate adder.
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