Atmel AVR Microcontroller Basic Math Code Library for Square Roots

• 16 bit Square Root 10 words ~1000 cycles by Jack Tidwell
• 16 bit Square Root 33 words 177..185 cycles by http://elm-chan.org
• 32 bit Square Root 53 words 528..544 cycles by http://elm-chan.org

See also:

• http://members.chello.nl/j.beentjes3/Ruud/sqrt32avr.htm rounding and flooring 16 and 32 bit sqrt (fast and short) by Ruudje