cbrt(), cbrtf()

Compute the cube root of a number

Synopsis:

#include <math.h>

double cbrt ( double x );

float cbrtf ( float x );

Arguments:

x

The number whose cube root you want to calculate.

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

The cbrt() and cbrtf() functions compute the cube root of x.

Returns:

The cube root of x. If x is NAN, cbrt() returns NAN.

Examples:

#include <stdio.h>
#include <inttypes.h>
#include <math.h>
#include <fpstatus.h>

int main(int argc, char** argv) {
        double a, b;

        a = 27.0;
        b = cbrt(a);
        printf("The cube root of %f is %f \n", a, b);

        return(0);
}

produces the output:

The cube root of 27.000000 is 3.000000

Classification:

ANSI, POSIX 1003.1

See also:

sqrt()