Processing Element for Reciprocal and Reciprocal Square Root
Aki Happonen, Perttu Salmela, A. Burian · 2008
Our topic is reciprocal and reciprocal square root and we propose processing element without iterations. Implementation is based on look-up tables and computation in logarithm domain. Simulation results and implementation complexity for 16 bits input operand with fixed point and floating point output formants are presented. Two truncation methods, LSB and half LSB, for output are presented and their impact to output error is discussed. Relative error for reciprocal is less than 5% for floating point output format.