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cbrt(3) | Library Functions Manual | cbrt(3) |
NAME¶
cbrt, cbrtf, cbrtl - cube root function
LIBRARY¶
Math library (libm, -lm)
SYNOPSIS¶
#include <math.h>
double cbrt(double x); float cbrtf(float x); long double cbrtl(long double x);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
cbrt():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| _XOPEN_SOURCE >= 500
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
cbrtf(), cbrtl():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
DESCRIPTION¶
These functions return 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¶
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
cbrt (), cbrtf (), cbrtl () | Thread safety | MT-Safe |
STANDARDS¶
C11, POSIX.1-2008.
HISTORY¶
C99, POSIX.1-2001.
SEE ALSO¶
2023-07-20 | Linux man-pages 6.05.01 |