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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():
or cc -std=c99
_BSD_SOURCE || _SVID_SOURCE ||
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOUCE >= 200112L;
or cc -std=c99
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¶
COLOPHON¶
This page is part of release 3.53 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/.
2010-09-20 | GNU |