cbrt(3)                    Library Functions Manual                    cbrt(3)

NAME
       cbrt, cbrtf, cbrtl - cube root function

LIBRARY
       Math library (libm, -lm)

SYNOPSIS
       #include <math.h>

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

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       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

DESCRIPTION
       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.

RETURN VALUE
       These functions return the cube root of x.

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

ERRORS
       No errors occur.

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

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |cbrt (), cbrtf (), cbrtl ()                 | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       C11, POSIX.1-2008.

HISTORY
       C99, POSIX.1-2001.

SEE ALSO
       pow(3), sqrt(3)

Linux man-pages 6.7               2024-03-12                           cbrt(3)