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[linuxjm/jm.git] / manual / LDP_man-pages / release / man3 / remainder.3

.\" 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.\" manual page may be incorrect or out-of-date.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 ̾Á°
drem, dremf, dreml, remainder, remainderf, remainderl \- ÉâÆ°¾®¿ôÅÀ¾ê;´Ø¿ô
.SH ½ñ¼°
.nf
.B #include <math.h>
.sp
/* C99 ÈÇ */
.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
/* Çѻߤµ¤ì¤¿ÊÌ̾ */
.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 ¤Ç¥ê¥ó¥¯¤¹¤ë¡£
.sp
.in -4n
glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
.RB ( feature_test_macros (7)
»²¾È):
.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 ÀâÌÀ
.BR remainder ()
´Ø¿ô¤Ï
.I x
¤ò
.I y
¤Ç³ä¤Ã¤¿Í¾¤ê¤ò·×»»¤¹¤ë¡£
ÊÖ¤êÃͤÏ
\fIx\fP\-\fIn\fP*\fIy\fP
¤Ç¤¢¤ë¡£
¤³¤³¤Ç
.I n
¤Ï
.I "x\ /\ y"
¤ÎÃͤòºÇ¤â¶á¤¤À°¿ô¤Ë´Ý¤á¤¿¤â¤Î¤Ç¤¢¤ë¡£
\fIx\fP\-\fIn\fP*\fIy\fP
¤ÎÀäÂÐÃͤ¬ 0.5 ¤Î¾ì¹ç¡¢¶ö¿ô¤Ë¤Ê¤ë¤è¤¦¤Ë
.I n
¤¬Áª¤Ð¤ì¤ë¡£

¤³¤ì¤é¤Î´Ø¿ô¤Ï¡¢¸½ºß¤Î´Ý¤á¥â¡¼¥É¤Î±Æ¶Á¤ò¼õ¤±¤Ê¤¤ (´Ý¤á¥â¡¼¥É¤Ë¤Ä¤¤¤Æ¤Ï
.BR fenv (3)
¤ò»²¾È)¡£
.LP
.BR drem ()
´Ø¿ô¤Ï¤³¤ì¤ÈÁ´¤¯Æ±¤¸Æ°ºî¤ò¤¹¤ë¡£
.SH ÊÖ¤êÃÍ
À®¸ù¤¹¤ë¤È¡¢¤³¤ì¤é¤Î´Ø¿ô¤ÏÉâÆ°¾®¿ôÅÀ¤Î¾ê; \fIx\fP\-\fIn\fP*\fIy\fP ¤òÊÖ¤¹¡£
ÊÖ¤êÃͤ¬ 0 ¤Î¾ì¹ç¡¢¤½¤ÎÉä¹æ¤Ï
.I x
¤ÈƱ¤¸¤Ë¤Ê¤ë¡£

.I x
¤«
.I y
¤¬ NaN ¤Î¾ì¹ç¡¢NaN ¤¬ÊÖ¤µ¤ì¤ë¡£

.I x
¤¬Ìµ¸ÂÂç¤Ç
.I y
¤¬ NaN ¤Ç¤Ê¤¤¾ì¹ç¡¢
Îΰ襨¥é¡¼ (domain error) ¤¬È¯À¸¤·¡¢NaN ¤¬ÊÖ¤µ¤ì¤ë¡£

.\" FIXME . Instead, glibc gives a domain error even if x is a NaN
.\" Interestingly, remquo(3) does not have the same problem.
.I y
¤¬¥¼¥í¤Ç
.I x
¤¬ NaN ¤Ç¤Ê¤¤¾ì¹ç¡¢
Îΰ襨¥é¡¼¤¬È¯À¸¤·¡¢NaN ¤¬ÊÖ¤µ¤ì¤ë¡£
.SH ¥¨¥é¡¼
¤³¤ì¤é¤Î´Ø¿ô¤ò¸Æ¤Ó½Ð¤·¤¿ºÝ¤Ë¥¨¥é¡¼¤¬È¯À¸¤·¤¿¤«¤ÎȽÄêÊýË¡¤Ë¤Ä¤¤¤Æ¤Î¾ðÊó¤Ï
.BR math_error (7)
¤ò»²¾È¤Î¤³¤È¡£
.PP
°Ê²¼¤Î¥¨¥é¡¼¤¬È¯À¸¤¹¤ë²ÄǽÀ­¤¬¤¢¤ë¡£
.TP
Îΰ襨¥é¡¼ (domain error): \fIx\fP ¤¬Ìµ¸ÂÂç¤Ç \fIy\fP ¤¬ NaN ¤Ç¤Ï¤Ê¤¤
.\" .I errno
.\" is set to
.\" .BR EDOM .
ÉÔÀµ (invalid) ÉâÆ°¾®¿ôÅÀÎã³°
.RB ( FE_INVALID )
¤¬¾å¤¬¤ë¡£
.IP
¤³¤ì¤é¤Î´Ø¿ô¤Ï¡¢¤³¤Î¾ì¹ç¤Ë
.I errno
¤òÀßÄꤷ¤Ê¤¤¡£
.\" 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
Îΰ襨¥é¡¼: \fIy\fP ¤¬¥¼¥í¤Ç \fIx\fP ¤¬ NaN ¤Ç¤Ï¤Ê¤¤ (²¼µ­¤Î¡Ö¥Ð¥°¡×»²¾È)
.I errno
¤Ë
.B EDOM
¤¬ÀßÄꤵ¤ì¤ë¡£
ÉÔÀµ (invalid) ÉâÆ°¾®¿ôÅÀÎã³°
.RB ( FE_INVALID )
¤¬¾å¤¬¤ë¡£
.SH ½àµò
.\" IEC 60559.
´Ø¿ô
.BR remainder (),
.BR remainderf (),
.BR remainderl ()
¤Ï C99 ¤È POSIX.1-2001 ¤Çµ¬Äꤵ¤ì¤Æ¤¤¤ë¡£

´Ø¿ô
.BR drem ()
¤Ï 4.3BSD ¤ËͳÍ褹¤ë¡£
.I float
¤È
.I "long double"
ÈǤÎ
.BR dremf ()
¤È
.BR dreml ()
¤Ï¡¢Tru64 ¤ä glibc2 ¤Î¤è¤¦¤Ê¤¤¤¯¤Ä¤«¤Î¥·¥¹¥Æ¥à¤Ë¸ºß¤¹¤ë¡£
¤³¤ì¤é¤Î´Ø¿ô¤Î»ÈÍѤÏÈò¤±¤Æ¡¢
.BR remainder ()
¤Ê¤É¤ò»ÈÍѤ¹¤ë¤³¤È¡£
.SH ¥Ð¥°

    remainder(nan(""), 0);

¤Î¸Æ¤Ó½Ð¤·¤ò¹Ô¤¦¤È¡¢´üÂÔÄ̤ê Nan ¤¬Ê֤뤬¡¢¸í¤Ã¤ÆÎΰ襨¥é¡¼¤¬È¯À¸¤¹¤ë¡£
Àµ¤·¤¯¤Ï¥¨¥é¡¼¤Ê¤·¤Î Nan ¤È¤Ê¤ë¤Ù¤­¤Ç¤¢¤ë¡£
.\" FIXME . this bug occurs as at glibc 2.8.
.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6779
.SH Îã
"remainder(29.0, 3.0)" ¤ò¸Æ¤Ó½Ð¤¹¤È \-1 ¤òÊÖ¤¹¡£
.SH ´ØÏ¢¹àÌÜ
.BR div (3),
.BR fmod (3),
.BR remquo (3)