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 3.27 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)