Man page - cbrtl(3)

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Manual

cbrt

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
ATTRIBUTES
STANDARDS
HISTORY
SEE ALSO

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).

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STANDARDS

C11, POSIX.1-2008.

HISTORY

C99, POSIX.1-2001.

SEE ALSO

pow (3), sqrt (3)