hypot, hypotl
Remonter à Math.h - Index
Header File
math.h
Category
Math Routines
Prototype
double hypot(double x, double y);
long double hypotl(long double x, long double y);
Description
Calculates hypotenuse of a right triangle.
hypot calculates the value z where
z2 = x2 + y2 and z >= 0
This is equivalent to the length of the hypotenuse of a right triangle, if the lengths of the two sides are x and y.
hypotl is the long double version; it takes long double arguments and returns a long double result.
Return Value
On success, these functions return z, a double (hypot) or a long double) (hypotl). On error (such as an overflow), they set the global variable errno to
ERANGE |
Result out of range |
and return the value HUGE_VAL (hypot) or _LHUGE_VAL) (hypotl). Error handling for these routines can be modified through the functions _matherr and _matherrl.
Example
#include <stdio.h>
#include <math.h>
int main(void)
{
double result;
double x = 3.0;
double y = 4.0;
result = hypot(x, y);
printf("The hypotenuse is: %lf\n", result);
return 0;
}
Portability
POSIX | Win32 | ANSI C | ANSI C++ | |
---|---|---|---|---|
hypot |
+ |
+ |
+ | |
hypotl |
+ |
+ |
+ |