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NAME

       cbrt, cbrtf, cbrtl - cube root function

SYNOPSIS

       #include <math.h>

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

       Link with -lm.

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

       cbrt():
           _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 ||
           _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE ||
           _POSIX_C_SOURCE >= 200112L;
           or cc -std=c99
       cbrtf(), cbrtl():
           _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
           _POSIX_C_SOUCE >= 200112L;
           or cc -std=c99

DESCRIPTION

       The cbrt() function returns the (real) cube root of x.  This function cannot  fail;  every
       representable real value has a representable real cube root.

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.

CONFORMING TO

       C99, POSIX.1-2001.

SEE ALSO

       pow(3), sqrt(3)

COLOPHON

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