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Modified Fast Inverse Square Root and Square Root Approximation Algorithms: The Method of Switching Magic Constants
2021
Computation
Many low-cost platforms that support floating-point arithmetic, such as microcontrollers and field-programmable gate arrays, do not include fast hardware or software methods for calculating the square root and/or reciprocal square root. Typically, such functions are implemented using direct lookup tables or polynomial approximations, with a subsequent application of the Newton–Raphson method. Other, more complex solutions include high-radix digit-recurrence and bipartite or multipartite
doi:10.3390/computation9020021
fatcat:gdlehndewrft5l6ys3sdcsu64u