функция кубического корня (cube root function)
Имя (Name)
cbrt, cbrtf, cbrtl - cube root function
Синопсис (Synopsis)
#include <math.h>
double cbrt(double x);
float cbrtf(float x);
long double cbrtl(long double x);
Link with -lm.
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
Описание (Description)
These functions return the (real) cube root of x. This function
cannot fail; every representable real value has a representable
real cube root.
Возвращаемое значение (Return value)
These functions return the cube root of x.
If x is +0, -0, positive infinity, negative infinity, or NaN, x
is returned.
Ошибки (Error)
No errors occur.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│cbrt(), cbrtf(), cbrtl() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
C99, POSIX.1-2001, POSIX.1-2008.
Смотри также (See also)
pow(3), sqrt(3)
