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man:cbrtl

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():
         _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
             || _XOPEN_SOURCE >= 500
             || /* Since glibc 2.19: */ _DEFAULT_SOURCE
             || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
     cbrtf(), cbrtl():
         _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
             || /* Since glibc 2.19: */ _DEFAULT_SOURCE
             || /* Glibc versions <= 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  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.

ATTRIBUTES

     For  an  explanation  of  the  terms  used   in   this   section,   see
     attributes(7).
     allbox;  lbw24  lb  lb  l  l  l.   Interface Attribute Value T{ cbrt(),
     cbrtf(), cbrtl() T}   Thread safety  MT-Safe

CONFORMING TO

     C99, POSIX.1-2001, POSIX.1-2008.

SEE ALSO

     pow(3), sqrt(3)

COLOPHON

     This page is part of release 4.16 of the Linux  man-pages  project.   A
     description  of  the project, information about reporting bugs, and the
     latest    version    of    this    page,    can     be     found     at
     https://www.kernel.org/doc/man-pages/.

GNU 2017-09-15 CBRT(3)

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