CBRT
Section: Linux Programmer's Manual (3)
Updated: 2008-08-05
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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 || _ISOC99_SOURCE; or
cc -std=c99
cbrtf(),
cbrtl():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; 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)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- CONFORMING TO
-
- SEE ALSO
-
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