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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2004-11-03 13:51:07 +0000 |
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| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2004-11-03 13:51:07 +0000 |
| commit | fea681dafb1363a154b7fc6d59baa83d2a9ebc5c (patch) | |
| tree | 8ea275c0f242af739617d0afc3e1b16c4eff3dc2 /man3p/cbrt.3p | |
Import of man-pages 1.70
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diff --git a/man3p/cbrt.3p b/man3p/cbrt.3p new file mode 100644 index 00000000..7a04b670 --- /dev/null +++ b/man3p/cbrt.3p @@ -0,0 +1,63 @@ +.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved +.TH "CBRT" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual" +.\" cbrt +.SH NAME +cbrt, cbrtf, cbrtl \- cube root functions +.SH SYNOPSIS +.LP +\fB#include <math.h> +.br +.sp +double cbrt(double\fP \fIx\fP\fB); +.br +float cbrtf(float\fP \fIx\fP\fB); +.br +long double cbrtl(long double\fP \fIx\fP\fB); +.br +\fP +.SH DESCRIPTION +.LP +These functions shall compute the real cube root of their argument +\fIx\fP. +.SH RETURN VALUE +.LP +Upon successful completion, these functions shall return the cube +root of \fIx\fP. +.LP +If +\fIx\fP is NaN, a NaN shall be returned. +.LP +If \fIx\fP is \(+-0 or \(+-Inf, \fIx\fP shall be returned. +.SH ERRORS +.LP +No errors are defined. +.LP +\fIThe following sections are informative.\fP +.SH EXAMPLES +.LP +None. +.SH APPLICATION USAGE +.LP +None. +.SH RATIONALE +.LP +For some applications, a true cube root function, which returns negative +results for negative arguments, is more appropriate +than \fIpow\fP( \fIx\fP, 1.0/3.0), which returns a NaN for \fIx\fP +less than 0. +.SH FUTURE DIRECTIONS +.LP +None. +.SH SEE ALSO +.LP +The Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<math.h>\fP +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. In the +event of any discrepancy between this version and the original IEEE and +The Open Group Standard, the original IEEE and The Open Group Standard +is the referee document. The original Standard can be obtained online at +http://www.opengroup.org/unix/online.html . |