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.\" Copyright 2001 Andries Brouwer <aeb@cwi.nl>.
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" Japanese Version Copyright (c) 2001 Yuichi SATO
.\" all rights reserved.
.\" Translated Fri Jul 13 20:33:41 JST 2001
.\" by Yuichi SATO <ysato@h4.dion.ne.jp>
.\"
.\"WORD: mantissa
.\"
.TH ROUND 3 2001-05-31 "" "Linux Programmer's Manual"
.SH ̾
round, roundf, roundl \- Ǥᤤͤ˴ݤ (2 Ĥͤξ 0 ˴ݤ)
.SH
.nf
.B #include <math.h>
.sp
.BI "double round(double " x );
.br
.BI "float roundf(float " x );
.br
.BI "long double roundl(long double " x );
.fi
.SH
δؿ \fIx\fP Ǥᤤͤ˴ݤ롣
2 Ĥͤξϡ
rint() Τ褦˺Ǥᤤ˴ݤꤻˡ
(ߤδݤ˴طʤ) 0 ˴ݤ롣
.SH ֤
ݤ͡
\fIx\fP ޤ̵¤ξ硢\fIx\fP ΤΤ֤
.SH 顼
EDOM ERANGE ʳΥ顼ϵʤ
\fIx\fP NaN ξ硢NaN ֤
.I errno
EDOM ꤵ롣
.SH
POSIX 1003.1-2001 ˤϡ(Сեκݤˤ
.I errno
ERANGE ꤹ뤫㳰Ȥ)
Сե˴ؤ뵭Ҥ롣
ºݤΤȤԤΥޥǤϤη̤ϥСեʤΤǡ
Υ顼ϰ̣ʤ
(Τ˸ȡСեϻؿκͤ
ɽӥåȤο꾮ˤʤ
IEEE-754 ʤ 32 ӥåȤ 64 ӥåȤưǤϡ
ؿκͤϤ줾 128 1024 Ǥꡢ
ӥåȤοϤ줾 24 53 Ǥ롣)
.SH
C99.
.SH Ϣ
.BR ceil (3),
.BR floor (3),
.BR lround (3),
.BR nearbyint (3),
.BR rint (3),
.BR trunc (3)
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