NAME
hypot() — Euclidean distance function
SYNOPSIS
#include <math.h>
double hypot(double x, double y);
DESCRIPTION
hypot()
returns
sqrt(x*x
+y*y)
, taking precautions against unwarranted overflows.
The ISO/ANSI C committee has approved the
hypot()
function for inclusion in the C9X draft standard.
To use this function, compile either with the default
-Ae
option or with the
-Aa
and
-D_HPUX_SOURCE
options. Make sure your program includes
<math.h>.
Link in the math library by specifying
-lm
on the compiler or linker command line.
RETURN VALUE
If
x
or
y
is NaN,
hypot()
returns NaN.
If the correct value would overflow,
hypot()
returns
HUGE_VAL.
If the correct value after rounding would be smaller in magnitude than
MINDOUBLE,
hypot()
returns zero.
ERRORS
No errors are defined.
STANDARDS CONFORMANCE
hypot(): SVID3, XPG4.2
