CBRT
Section: Linux Programmer's Manual (3)
Updated: 2013-09-18
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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.
ATTRIBUTES
Multithreading (see pthreads(7))
The
cbrt(),
cbrtf(),
and
cbrtl()
functions are thread-safe.
CONFORMING TO
C99, POSIX.1-2001.
SEE ALSO
pow(3),
sqrt(3)
COLOPHON
This page is part of release 3.74 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
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- Multithreading (see pthreads(7))
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-