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 re- turned. ERRORS No errors occur. ATTRIBUTES For an explanation of the terms used in this section, see at- tributes(7). ┌────────────────────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├────────────────────────────────────────────┼───────────────┼─────────┤ │cbrt(), cbrtf(), cbrtl() │ Thread safety │ MT-Safe │ └────────────────────────────────────────────┴───────────────┴─────────┘ STANDARDS C99, POSIX.1-2001, POSIX.1-2008. SEE ALSO pow(3), sqrt(3) Linux man-pages 6.03 2023-02-05 cbrt(3)
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