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cbrt(3) Library Functions Manual cbrt(3)
cbrt, cbrtf, cbrtl - cube root function
Math library (libm, -lm)
#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
These functions return the (real) cube root of x. This function cannot fail; every representable real value has a real cube root, and rounding it to a representable value never causes overflow nor underflow.
These functions return the cube root of x. If x is +0, -0, positive infinity, negative infinity, or NaN, x is returned.
No errors occur.
For an explanation of the terms used in this section, see attributes(7). ┌─────────────────────────────────────┬───────────────┬─────────┐ │ Interface │ Attribute │ Value │ ├─────────────────────────────────────┼───────────────┼─────────┤ │ cbrt(), cbrtf(), cbrtl() │ Thread safety │ MT-Safe │ └─────────────────────────────────────┴───────────────┴─────────┘
C11, POSIX.1-2008.
C99, POSIX.1-2001.
pow(3), sqrt(3)
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Linux man-pages 6.9.1 2024-05-02 cbrt(3)
Pages that refer to this page: exp10(3), exp2(3), exp(3), log10(3), log2(3), log(3), pow(3), sqrt(3)