Charles

How accurate does your square root have to be?

I have some code to do roots within 1% by a Taylor expansion with some relatively fast pbp code using sqr, >>, <<, +, - and a /.

Similarly I have additional code to do roots to 1% when the exponents
are near square, e.g. 0.45 or 0.65 rather than 0.50

My application is measuring air flow rate from Pitot tube type differential
pressure measurements.