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CBRT(3)                    Linux Programmer's Manual                   CBRT(3)

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
       This  page  is  part of release 3.53 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU                               2010-09-20                           CBRT(3)