Approximate Reciprocal Square Root with Single - and Half-Precision Floats
Matheus Martins Susin, Lucas Wanner · 2018
In this work, we compared the precision, speed, and power consumption of the reciprocal square root of a single-precision floating point number, using different approximation techniques. We also devised an equivalent approximation for half-precision floating point numbers, and evaluated its performance across the whole range of positive non-zero 16-bit floating point values.