NAME

sqrt, cbrt − square root, cube root

SYNOPSIS

#include <math.h>

double sqrt(double x);

double cbrt(double x);

DESCRIPTION

sqrt(x) returns the square root of x, correctly rounded according to ANSI/IEEE 754-1985.  In addition, sqrt() may also set errno and call matherr(3M). 

cbrt(x) returns the cube root of x. cbrt() is accurate to within 0.7 ulps. 

RETURN VALUES

For exceptional cases, matherr(3M) tabulates the values to be returned as dictated by various Standards. 

SEE ALSO

matherr(3M)

Sun Release 4.1  —  Last change: 22 Jul 1994