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 returns the cube root of x.

Sqrt returns the square root of x.

DIAGNOSTICS

Sqrt returns a NaN when x is negative; errno is set to EDOM.

ERRORS (due to roundoff, etc.)

Cbrt is accurate to within 0.7 ulps.

Sqrt 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.

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