1 .\" Copyright 1995 Jim Van Zandt <jrv@vanzandt.mv.com>
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12 .\" Since the Linux kernel and libraries are constantly changing, this
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23 .\" changed `square root' into `cube root' - aeb, 950919
25 .\" Modified 2002-07-27 Walter Harms
26 .\" (walter.harms@informatik.uni-oldenburg.de)
28 .TH CBRT 3 2010-09-20 "GNU" "Linux Programmer's Manual"
30 cbrt, cbrtf, cbrtl \- cube root function
35 .BI "double cbrt(double " x );
37 .BI "float cbrtf(float " x );
39 .BI "long double cbrtl(long double " x );
45 Feature Test Macro Requirements for glibc (see
46 .BR feature_test_macros (7)):
53 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 500 ||
54 _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE ||
55 _POSIX_C_SOURCE\ >=\ 200112L;
63 _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
64 _POSIX_C_SOUCE\ >=\ 200112L;
73 function returns the (real) cube root of \fIx\fP.
74 This function cannot fail; every representable real value has a
75 representable real cube root.
77 These functions return the cube root of
82 is +0, \-0, positive infinity, negative infinity, or NaN,
90 .\" was a GNU extension. It is now a C99 requirement.