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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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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 6.10 2024-07-23 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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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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