NAME

     sqrt - square root function

SYNOPSIS

     #include <math.h>

     double sqrt(double x);

DESCRIPTION

     The sqrt() function returns the non-negative square root  of
     x.  It fails and sets errno to EDOM, if x is negative.

ERRORS

     EDOM x is negative.

CONFORMING TO

     SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO

     hypot(3)