1CBRT(3)                    Linux Programmer's Manual                   CBRT(3)
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NAME

6       cbrt, cbrtf, cbrtl - cube root function
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SYNOPSIS

9       #include <math.h>
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11       double cbrt(double x);
12       float cbrtf(float x);
13       long double cbrtl(long double x);
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15       Link with -lm.
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17   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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19       cbrt():
20           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
21               || _XOPEN_SOURCE >= 500
22               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
23               || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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25       cbrtf(), cbrtl():
26           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
27               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
28               || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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DESCRIPTION

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

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

42       No errors occur.
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ATTRIBUTES

45       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
46       tributes(7).
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48       ┌────────────────────────────────────────────┬───────────────┬─────────┐
49       │Interface                                   │ Attribute     │ Value   │
50       ├────────────────────────────────────────────┼───────────────┼─────────┤
51       │cbrt(), cbrtf(), cbrtl()                    │ Thread safety │ MT-Safe │
52       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

55       C99, POSIX.1-2001, POSIX.1-2008.
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SEE ALSO

58       pow(3), sqrt(3)
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COLOPHON

61       This  page  is  part of release 5.12 of the Linux man-pages project.  A
62       description of the project, information about reporting bugs,  and  the
63       latest     version     of     this    page,    can    be    found    at
64       https://www.kernel.org/doc/man-pages/.
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68GNU                               2021-03-22                           CBRT(3)
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