NAME    [Toc]    [Back]

       sqrt, cbrt - Square and cube root functions

SYNOPSIS    [Toc]    [Back]

       #include <math.h>

       double sqrt(
               double x ); float sqrtf(
               float x ); long double sqrtl(
               long double x ); double cbrt(
               double y ); float cbrtf(
               float y ); long double cbrtl(
               long double y );

LIBRARY    [Toc]    [Back]

       Math Library (libm)

DESCRIPTION    [Toc]    [Back]

       sqrt(),  sqrtf(),  and  sqrtl() compute the rounded square
       root of x. For platforms supporting a  signed  zero,  sqrt
       (-0) = 0.

       cbrt(),  cbrtf(), and cbrtl() return the rounded cube root
       of y.

       -----------------------------------------------------------------------
       Function                        Exceptional   Argu-   Routine Behavior
                                       ment
       -----------------------------------------------------------------------
       sqrt(), sqrtf(), sqrtl()        x < 0                 invalid argument
       -----------------------------------------------------------------------




                                                          sqrt(3)