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hypot

NAME

hypot, hypotf, hypotl - Euclidean distance function

SYNOPSIS

 #include <math.h>
 
 double hypot(double x, double y);
 

 float hypotf(float x, float y);
 

 long double hypotl(long double x, long double y);
 

Link with -lm.

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

hypot(), hypotf(), hypotl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 || _ISOC99_SOURCE; or cc -std=c99

DESCRIPTION

The hypot() function returns sqrt(x*x+y*y). This is the length of the hypotenuse of a right-angle triangle with sides of length x and y, or the distance of the point (x,y) from the origin.

CONFORMING TO

SVr4, 4.3BSD, C99. The float and long double variants are C99 requirements.

SEE ALSO

cabs(3), sqrt(3)