SQRT(3M)                             BSD                              SQRT(3M)



NAME
     cbrt, sqrt - cube root, square root

SYNOPSIS
     #include <math.h>

     double cbrt(x)
     double x;

     double sqrt(x)
     double x;

DESCRIPTION
     cbrt(x) returns the cube root of x.

     sqrt(x) returns the square root of x.

ERROR (due to Roundoff etc.)
     cbrt is accurate to within 0.7 ulps.
     sqrt on a machine that conforms to IEEE 754 is correctly rounded in
     accordance with the rounding mode in force; the error is less than half
     an ulp in the default mode (round-to-nearest).  An ulp is one Unit in the
     Last Place carried.

SEE ALSO
     math(3M), matherr(3M)