double hypot(double fx, double fy)
The euclidean distance of the two parameters.
Calculates the hypothenuse (euclidean distance):
The distance between the endpoint of two adjacent perpendicular distances.
Solves Pythagoras formula; distance =sqrt( pow( fx, 2.0) +pow( fy, 2.0));
ATTENTION! works extremely slow! Use it only for an occasional calculation!