cbrt - Man Page

Math library (libm, -lm)

#include <math.h>

double cbrt(double x);
float cbrtf(float x);
long double cbrtl(long double x);

cbrt():

    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
        || _XOPEN_SOURCE >= 500
        || /* Since glibc 2.19: */ _DEFAULT_SOURCE
        || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

cbrtf(), cbrtl():

    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
        || /* Since glibc 2.19: */ _DEFAULT_SOURCE
        || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

These functions return the (real) cube root of x. This function cannot fail; every representable real value has a real cube root, and rounding it to a representable value never causes overflow nor underflow.

These functions return the cube root of x.

If x is +0, -0, positive infinity, negative infinity, or NaN, x is returned.

No errors occur.

For an explanation of the terms used in this section, see attributes(7).

C11, POSIX.1-2008.

C99, POSIX.1-2001.

pow(3), sqrt(3)

exp(3), exp10(3), exp2(3), log(3), log10(3), log2(3), pow(3), sqrt(3), unu-1op(1).

The man pages cbrtf(3) and cbrtl(3) are aliases of cbrt(3).