@(#)hypot.3 4.1 (Berkeley) 05/15/85

.AT 3 hypot, cabs - Euclidean distance

 #include <math.h> 

 double hypot(x, y)  double x, y; 

 double cabs(z)  struct { double x, y;} z; 

Hypot and cabs return

sqrt(x*x + y*y),

taking precautions against unwarranted overflows.

exp(3) for sqrt