cbrt(3) - Linux man page
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.
Conforming To
C99, POSIX.1-2001.