Returns an integer square root.
unsigned 32-bit integer
integer square root
var v = sqrt( 9 >>> 0 ); // returns 3
var v = sqrt( 2 >>> 0 ); // returns 1
var v = sqrt( 3 >>> 0 ); // returns 1
var v = sqrt( 0 >>> 0 ); // returns 0
Returns an integer square root.