Single-Precision Logarithmic Arithmetic Unit with Floating-Point Input/output Data

Topic: Hardware
Format: PDF
In this paper, the authors offer an alternative for classical Floating-Point (FP) units to solve faster and with less area the multiplication or division of two single-precision operands. Also, these operations are performed faster and more accurately than in previous works that used logarithmic arithmetic. All computations are fused in order to perform one single non-redundant addition in the critical path for finding the logarithm of the result. A second non-redundant addition is used to produce the result in floating-point format. Using Matlab analysis, the conversion error was also diminished by using correction values in the content of look-up tables.

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