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.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
.\" <mtk.manpages@gmail.com>
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" References consulted:
.\" Linux libc source code
.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\" 386BSD man pages
.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
.\" Modified 2002-07-27 by Walter Harms
.\" (walter.harms@informatik.uni-oldenburg.de)
.\"
.\" Japanese Version Copyright (c) 1996 Kenji Kajiwara
.\" all rights reserved.
.\" Translated Mon Jul 15 18:40:00 JST 1996
.\" by Kenji Kajiwara
.\" Proof Reading: Takashi Yoshino
.\" Updated Sun Sep 14 JST 2003 by Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2008-09-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.TH SQRT 3 2008-08-05 "" "Linux Programmer's Manual"
.SH ̾
sqrt, sqrtf, sqrtl \- ʿؿ
.SH
.nf
.B #include <math.h>
.sp
.BI "double sqrt(double " x );
.br
.BI "float sqrtf(float " x );
.br
.BI "long double sqrtl(long double " x );
.fi
.sp
\fI\-lm\fP ǥ롣
.sp
.in -4n
glibc εǽޥ
.RB ( feature_test_macros (7)
):
.in
.sp
.ad l
.BR sqrtf (),
.BR sqrtl ():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
.I cc\ -std=c99
.ad b
.SH
.BR sqrt ()
ؿ \fIx\fP ʿΤǤʤ֤ͤ
.SH ֤
ȡδؿ
.I x
ʿ֤
.I x
NaN ξ硢NaN ֤롣
.I x
+0 (\-0) ξ硢+0 (\-0) ֤롣
.I x
̵ξ硢̵礬֤롣
.I x
0 ̤ξ硢ΰ襨顼 (domain error) ȯ
NaN ֤롣
.SH 顼
δؿƤӽФݤ˥顼ȯȽˡˤĤƤξ
.BR math_error (7)
ȤΤȡ
.PP
ʲΥ顼ȯǽ롣
.TP
ΰ襨顼 (domain error): \fIx\fP 0 ̤
.I errno
.B EDOM
ꤵ롣
(invalid) ư㳰
.RB ( FE_INVALID )
夬롣
.SH
C99, POSIX.1-2001.
.I double
Ǥδؿ SVr4, 4.3BSD, C89 ˤƤ롣
.SH Ϣ
.BR cbrt (3),
.BR csqrt (3),
.BR hypot (3)
|
