NAME

hypot − Euclidean distance function

SYNOPSIS

cc [flag ...] file ... −lm [library ...]

#include <math.h>

double hypot (double x, double y);

DESCRIPTION

hypot returns

sqrt(x ∗ x + y ∗ y)

taking precautions against unwarranted overflows. 

SEE ALSO

matherr(3M)

DIAGNOSTICS

When the correct value would overflow, hypot returns HUGE and sets errno to ERANGE. 

Except when the −Xc compilation option is used, these error-handling procedures may be changed with the function matherr.  When the −Xa or −Xc compilation options are used, HUGE_VAL is returned instead of HUGE. 

  —  Math Libraries