_hypot, hypotf
Calculates the hypotenuse.
double _hypot(
double x,
double y
);
float _hypotf(
float x,
float y
);
Parameters
- x, y
Floating-point values.
Return Value
_hypot returns the length of the hypotenuse if successful or INF (infinity) on overflow. The errno variable is set to ERANGE on overflow. You can modify error handling with _matherr.
For more information about this and other return codes, see _doserrno, errno, _sys_errlist, and _sys_nerr.
Platforms
_hypotf is only available on Itanium Processor Family (IPF) platforms. _hypot is available on all platforms.
Remarks
The _hypot function calculates the length of the hypotenuse of a right triangle, given the length of the two sides x and y (in other words, the square root of x2 + y2).
Requirements
Routine |
Required header |
|---|---|
_hypot |
<math.h> |
hypotf |
<math.h> |
For more compatibility information, see Compatibility in the Introduction.
Example
// crt_hypot.c
// This program prints the hypotenuse of a right triangle.
#include <math.h>
#include <stdio.h>
int main( void )
{
double x = 3.0, y = 4.0;
printf( "If a right triangle has sides %2.1f and %2.1f, "
"its hypotenuse is %2.1f\n", x, y, _hypot( x, y ) );
}
If a right triangle has sides 3.0 and 4.0, its hypotenuse is 5.0
.NET Framework Equivalent
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.