cbrt (3)
NAME
cbrt, cbrtf, cbrtl - cube root functionSYNOPSIS
#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
-
_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.SEE ALSO
pow(3), sqrt(3)COLOPHON
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