hypot

hypot

Compute the Hypotenuse function

Portability: UNIX compatible

SYNOPSIS
DESCRIPTION
RETURN VALUE
DIAGNOSTICS
PORTABILITY
EXAMPLE
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

#include <lcmath.h>

double hypot(double x,double y);

DESCRIPTION

hypot computes the square root of the sum of squares of its two arguments. The value returned by hypot is defined by this equation:

[IMAGE]

RETURN VALUE

hypot returns the square root of the sum of the squares of its arguments.

DIAGNOSTICS

The run-time library writes an error message to the standard error file ( stderr ) if the result of the computation would be larger than HUGE_VAL . In this case, the function returns HUGE_VAL , the largest positive floating-point number that can be represented.

If an error occurs in hypot , the _matherr routine is called. You can supply your own version of _matherr to suppress the diagnostic message or modify the value returned.

PORTABILITY

hypot is portable to many, but not all, non UNIX C implementations.

EXAMPLE

#include <stdio.h>
#include <lcmath.h>

#define SVECTOR .7854

main()
{
   double hypov;
   hypov = hypot(SVECTOR,-SVECTOR);
   printf("hypot(%f,%f) = %f \n", SVECTOR,-SVECTOR, hypov);
}

RELATED FUNCTIONS

_matherr

SEE ALSO

Mathematical Functions

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