cbrtf(3) - f39

1cbrt(3)                    Library Functions Manual                    cbrt(3)
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NAME

6       cbrt, cbrtf, cbrtl - cube root function
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LIBRARY

9       Math library (libm, -lm)
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SYNOPSIS

12       #include <math.h>
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14       double cbrt(double x);
15       float cbrtf(float x);
16       long double cbrtl(long double x);
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18   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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20       cbrt():
21           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
22               || _XOPEN_SOURCE >= 500
23               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
24               || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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26       cbrtf(), cbrtl():
27           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
28               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
29               || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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DESCRIPTION

32       These functions return the (real) cube root of x.  This function cannot
33       fail; every representable real value  has  a  representable  real  cube
34       root.
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RETURN VALUE

37       These functions return the cube root of x.
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39       If  x is +0, -0, positive infinity, negative infinity, or NaN, x is re‐
40       turned.
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ERRORS

43       No errors occur.
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ATTRIBUTES

46       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
47       tributes(7).
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49       ┌────────────────────────────────────────────┬───────────────┬─────────┐
50       │Interface                                   │ Attribute     │ Value   │
51       ├────────────────────────────────────────────┼───────────────┼─────────┤
52       │cbrt(), cbrtf(), cbrtl()                    │ Thread safety │ MT-Safe │
53       └────────────────────────────────────────────┴───────────────┴─────────┘
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STANDARDS

56       C11, POSIX.1-2008.
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HISTORY

59       C99, POSIX.1-2001.
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