cbrt(3) — Linux manual page

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 real cube root,
       and rounding it to a representable value never causes overflow
       nor underflow.

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

       pow(3), sqrt(3)

COLOPHON

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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)

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