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.\" Copyright (c) 2007 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" 2007-07-31, mtk, Created
.\"
.\" Japanese Version Copyright (c) 2007 Akihiro MOTOKI
.\" all rights reserved.
.\" Translated 2007-10-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.66
.\"
.TH TIMERADD 3 2007-07-31 "Linux" "Linux Programmer's Manual"
.SH ̾
timeradd, timersub, timercmp, timerclear, timerisset \- timeval
.SH
.nf
.B #include <sys/time.h>
.BI "void timeradd(struct timeval *" a ", struct timeval *" b ,
.BI " struct timeval *" res );
.BI "void timersub(struct timeval *" a ", struct timeval *" b ,
.BI " struct timeval *" res );
.BI "void timerclear(struct timeval *" tvp );
.BI "void timerisset(struct timeval *" tvp );
.BI "void timercmp(struct timeval *" a ", struct timeval *" b ", " CMP );
.fi
.sp
.in -4n
glibc εǽޥ
.RB ( feature_test_macros (7)
):
.in
.sp
嵭Ƥδؿ:
_BSD_SOURCE
.SH
.I timeval
¤Τ뤿ΥޥƤ롣
.I timeval
¤Τ
.I <sys/time.h>
ǰʲΤ褦Ƥ롣
.sp
.in +4n
.nf
struct timeval {
time_t tv_sec; /* */
suseconds_t tv_usec; /* ޥ */
};
.fi
.in
.PP
.BR timeradd ()
ϡ
.I a
.I b
λͤûιפ
.I res
ˤ껲Ȥ
.I timeval
¤Τ˳Ǽ롣̤ϡ
.I res\->tv_usec
ͤ 0 999,999 ϰϤ褦롣
.BR timersub ()
ϡ
.I a
λͤ
.I b
λͤη̤
.I res
ˤ껲Ȥ
.I timeval
¤Τ˳Ǽ롣̤ϡ
.I res\->tv_usec
ͤ 0 999,999 ϰϤ褦롣
.BR timerclear ()
.I tvp
ˤ껲Ȥ
.I timeval
¤Τ 0 롣
0 줿
.I timeval
¤Τϡﵪ (the Epoch) Ǥ 1970 ǯ 1 1 θ 0 ɽ
.BR timerisset ()
ϡ
.I tvp
ˤ껲Ȥ
.I timeval
¤ΤΤ줫Υեɤ 0 ʳͤäƤС
(0 ʳ) ֤
.BR timercmp ()
.I a
.I b
λͤӱ黻
.I CMP
ȤäӤӷ̤˴Ť (0 ʳ) (0) ֤
.SH ֤
.BR timerisset ()
.BR timercmp ()
ϡ (0 ʳ) (0) ֤
.BR
.SH 顼
顼Ƥʤ
.SH
POSIX.1-2001 ˤϤʤ
ۤȤɤ BSD ͳΥƥ¸ߤ롣
.SH Ϣ
.BR gettimeofday (2),
.BR time (7).
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