1 .\" Copyright 1995 Jim Van Zandt <jrv@vanzandt.mv.com>
3 .\" %%%LICENSE_START(VERBATIM)
4 .\" Permission is granted to make and distribute verbatim copies of this
5 .\" manual provided the copyright notice and this permission notice are
6 .\" preserved on all copies.
8 .\" Permission is granted to copy and distribute modified versions of this
9 .\" manual under the conditions for verbatim copying, provided that the
10 .\" entire resulting derived work is distributed under the terms of a
11 .\" permission notice identical to this one.
13 .\" Since the Linux kernel and libraries are constantly changing, this
14 .\" manual page may be incorrect or out-of-date. The author(s) assume no
15 .\" responsibility for errors or omissions, or for damages resulting from
16 .\" the use of the information contained herein. The author(s) may not
17 .\" have taken the same level of care in the production of this manual,
18 .\" which is licensed free of charge, as they might when working
21 .\" Formatted or processed versions of this manual, if unaccompanied by
22 .\" the source, must acknowledge the copyright and authors of this work.
25 .\" changed `square root' into `cube root' - aeb, 950919
27 .\" Modified 2002-07-27 Walter Harms
28 .\" (walter.harms@informatik.uni-oldenburg.de)
30 .TH CBRT 3 2013-09-18 "GNU" "Linux Programmer's Manual"
32 cbrt, cbrtf, cbrtl \- cube root function
37 .BI "double cbrt(double " x );
39 .BI "float cbrtf(float " x );
41 .BI "long double cbrtl(long double " x );
47 Feature Test Macro Requirements for glibc (see
48 .BR feature_test_macros (7)):
55 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 500 ||
56 _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE ||
57 _POSIX_C_SOURCE\ >=\ 200112L;
65 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
66 _POSIX_C_SOUCE\ >=\ 200112L;
75 function returns the (real) cube root of
77 This function cannot fail; every representable real value has a
78 representable real cube root.
80 These functions return the cube root of
85 is +0, \-0, positive infinity, negative infinity, or NaN,
91 .SS Multithreading (see pthreads(7))
97 functions are thread-safe.
101 .\" was a GNU extension. It is now a C99 requirement.
106 This page is part of release 3.79 of the Linux
109 A description of the project,
110 information about reporting bugs,
111 and the latest version of this page,
113 \%http://www.kernel.org/doc/man\-pages/.