From: Tanaka Akira <akr@...17n.org>
Date: 2001-12-14T10:58:51+09:00
Subject: [ruby-dev:15438] Re: Time#utcoff

In article <1008292110.329151.8468.nullmailer@ev.netlab.jp>,
  matz@ruby-lang.org (Yukihiro Matsumoto) writes:

> $B;d$b(BCompile Farm$B$r;H$&$h$&$K$7$J$/$A$c%@%a$+$J$"!#(B

$B$=$&$7$?J}$,$$$$$H;W$$$^$9$M!#$$$m$s$JLdBj$,$"$j$=$&$J$N$G!#(B

$B$A$J$_$K(B PR168 $B$K4X$7$F$$$($P!"$8$D$O860x$,$9$G$KH=L@$7$F$$$^$9!#(B
time_localtime $BFb$N(B localtime $B$,(B NULL $B$rJV$9$N$,860x$G$9!#(B

$B$D$$$G$K$$$($P(B make_time_t $B$,<:GT$9$k$N$b$=$l$,860x$G$9!#(B

time_localtime $B$K4X$7$F$OBP>INEK!E*$K$O8!::$rF~$l$FNc30$r@8@.$5$;$l$P(B
$B$$$$$s$G$9$,!"(Blocaltime_r $B$@$HLdBj$J$$$N$,4qL/$G$9!#(B

$B$^$?!"(Bmake_time_t $B$NJ}$OLq2p$G!"FsJ,C5:w$7$h$&$K$b=i4|>uBV$NHO0O$NC<E@(B
$B$G(B localtime/gmtime $B$,<:GT$9$k$N$GOC$K$J$j$^$;$s!#$?$V$s!#(B

$B$7$g$&$,$J$$$N$G!"(Bmake_time_t $B$K4X$7$F$O!"(Btimegm $B$H(B mktime $B$,$"$C$?$i!"(B
$B$H$j$"$($:$=$A$i$+$i;H$C$F$_$k!"$H$$$&$N$,$$$$$s$G$O$J$$$+$H;W$C$F$$$^(B
$B$9!#(B-1 $B$,JV$C$F$-$?$i8=:_$N<BAu$G$b$&0l2sD)@o$9$k$3$H$K$7$F!#9,$$$K$7(B
$B$F(B glibc $B$K$O(B timegm $B$bB8:_$9$k$N$G(B Linux/Alpha $B$NLdBj$rJRIU$1$i$l$^$9(B
$B$7!"B.EY$b>e$,$k$@$m$&$H$$$&5$$,$7$^$9!#$H$$$&$+$3$3$^$G$O$d$C$?$s$G$9(B
$B$,!#(B

$B$G!"<!$KLdBj$K$J$C$F$k$N$,(B NUM2LONG $B$G$9!#$3$l$O8=:_Cf?H$,(B NUM2INT $B$J(B
$B$N$G$9$,!"$3$N%^%7%s$G$O(B sizeof(int)==4,
sizeof(long)==sizeof(time_t)==8 $B$J$N$G!"(BNUM2LONG $B$r;H$&$h$&$K$7$F$b(B
Time.at $B$,$&$^$/F0$-$^$;$s!#(B

$B$=$&$=$&!"(BRuby $B0J30$G$O(B zdump -v $B$,(B core $B$rEG$/$H$$$&OC$b$"$j$^$9!#(B

> gmtoff$B$C$F$N$O(Bstruct tm$B$N%a%s%P$K$b$"$j$^$9$7!"(Bgmt$B$r(Butc$B$KCV(B
> $B$-49$($k$C$F$N$O(BTime$B%/%i%9$N$[$+$N%a%=%C%I$G$b9-$/9T$C$F$$$k(B
> $B$N$G<+A3$J7P0^$@$H;W$&$N$G$9$,!"(Butcoff$B$C$FL>A0$O$J$<$3$s$J$K(B
> $B0cOB46$,$"$k$s$G$7$g$&!)(B $B$o$?$7$@$1!)(B

timex.rb $B$K:n$C$?;O$a$N$3$m$O0cOB46$,$"$C$?$h$&$J5$$b$7$^$9$,!"47$l$^(B
$B$7$?!#(B
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$U$($m(B! $B$o$+$a$A$c$s:n@o$G$9$(C"=$B!W(B(Little Worker, $B7KM7@84](B)