 
			| GNU/Linux | CentOS 2.1AS(Slurm) | |
|  | sqrt(3) |  | 
sqrt − square root function
#include <math.h>
double sqrt(double x);
The sqrt() function returns the non-negative square root of x. It fails and sets errno to EDOM, if x is negative.
| EDOM | x is negative. | 
SVID 3, POSIX, BSD 4.3, ISO 9899
hypot(3)
|  | sqrt(3) |  |