.\" 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.\" manual page may be incorrect or out-of-date.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 2002-08-10 Walter Harms
.\"	(walter.harms@informatik.uni-oldenburg.de)
.\" Modified 2003-11-18, 2004-10-05 aeb
.\"
.\" Japanese Version Copyright (c) 2004 Yuichi SATO
.\" and Copyright (c) 2008 Akihiro MOTOKI
.\" Translated 2004-09-02, Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated 2005-02-26, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\" Modified 2005-02-26, Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated 2008-09-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.TH REMAINDER 3 2009-02-04 "" "Linux Programmer's Manual"
.SH ̾
drem, dremf, dreml, remainder, remainderf, remainderl \- ư;ؿ
.SH 
.nf
.B #include <math.h>
.sp
/* C99  */
.BI "double remainder(double " x ", double " y );
.BI "float remainderf(float " x ", float " y );
.BI "long double remainderl(long double " x ", long double " y );
.sp
/* ѻߤ줿̾ */
.BI "double drem(double " x ", double " y );
.BI "float dremf(float " x ", float " y );
.BI "long double dreml(long double " x ", long double " y );
.sp
.fi
\fI\-lm\fP ǥ󥯤롣
.sp
.in -4n
glibc εǽޥ׷
.RB ( feature_test_macros (7)
):
.in
.sp
.ad l
.BR remainder ():
_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE; or
.I cc\ -std=c99
.br
.BR remainderf (),
.BR remainderl ():
_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
.I cc\ -std=c99
.br
.BR drem (),
.BR dremf (),
.BR dreml ():
_SVID_SOURCE || _BSD_SOURCE
.ad b
.SH 
.BR remainder ()
ؿ
.I x

.I y
dzä;׻롣
֤ͤ
\fIx\fP\-\fIn\fP*\fIy\fP
Ǥ롣

.I n

.I "x\ /\ y"
ͤǤᤤ˴ݤ᤿ΤǤ롣
\fIx\fP\-\fIn\fP*\fIy\fP
ͤ 0.5 ξ硢ˤʤ褦
.I n
Ф롣

δؿϡߤδݤ⡼ɤαƶʤ (ݤ⡼ɤˤĤƤ
.BR fenv (3)
򻲾)
.LP
.BR drem ()
ؿϤƱư򤹤롣
.SH ֤
ȡδؿưξ; \fIx\fP\-\fIn\fP*\fIy\fP ֤
֤ͤ 0 ξ硢
.I x
Ʊˤʤ롣

.I x

.I y
 NaN ξ硢NaN ֤롣

.I x
̵
.I y
 NaN Ǥʤ硢
ΰ襨顼 (domain error) ȯNaN ֤롣

.\" FIXME . Instead, glibc gives a domain error even if x is a NaN
.\" Interestingly, remquo(3) does not have the same problem.
.I y

.I x
 NaN Ǥʤ硢
ΰ襨顼ȯNaN ֤롣
.SH 顼
δؿƤӽФݤ˥顼ȯȽˡˤĤƤξ
.BR math_error (7)
򻲾ȤΤȡ
.PP
ʲΥ顼ȯǽ롣
.TP
ΰ襨顼 (domain error): \fIx\fP ̵ \fIy\fP  NaN ǤϤʤ
.\" .I errno
.\" is set to
.\" .BR EDOM .
 (invalid) ư㳰
.RB ( FE_INVALID )
夬롣
.IP
δؿϡξ
.I errno
ꤷʤ
.\" FIXME . Is it intentional that these functions do not set errno?
.\" They do set errno for the y == 0 case, below.
.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6783
.TP
ΰ襨顼: \fIy\fP  \fIx\fP  NaN ǤϤʤ (Ρ֥Х׻)
.I errno

.B EDOM
ꤵ롣
 (invalid) ư㳰
.RB ( FE_INVALID )
夬롣
.SH 
.\" IEC 60559.
ؿ
.BR remainder (),
.BR remainderf (),
.BR remainderl ()
 C99  POSIX.1-2001 ǵꤵƤ롣

ؿ
.BR drem ()
 4.3BSD ͳ褹롣
.I float

.I "long double"
Ǥ
.BR dremf ()

.BR dreml ()
ϡTru64  glibc2 Τ褦ʤĤΥƥ¸ߤ롣
δؿλѤ򤱤ơ
.BR remainder ()
ʤɤѤ뤳ȡ
.SH Х

    remainder(nan(""), 0);

θƤӽФԤȡ̤ Nan ֤뤬äΰ襨顼ȯ롣
ϥ顼ʤ Nan Ȥʤ٤Ǥ롣
.\" FIXME . this bug occurs as at glibc 2.8.
.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6779
.SH 
"remainder(29.0, 3.0)" ƤӽФ \-1 ֤
.SH Ϣ
.BR div (3),
.BR fmod (3),
.BR remquo (3)