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To: man-jp-reviewer@jp.FreeBSD.org, ohsawa@ccn.aitai.ne.jp
From: Kazuo Horikawa <horikawa@jp.FreeBSD.org>
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Subject: [man-jp-reviewer 4186] Re: (man3) frexp.3
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$BKY@n(B % $B%"%k%<%s%A%sBP%9%&%'!<%G%s@o$b4Q$F$7$^$$$=$&$G$9!#(B

OHSAWA Chitoshi <ohsawa@ccn.aitai.ne.jp> wrote:
> .Nd $B$NItJ,$K!"2?$+0cOB46$,$"$j$^$9!#(B
> 
> $B1Q8l86J8(B
> .Sh NAME
> .Nm frexp
> .Nd convert floating-point number to fractional and integral components
> 
> $BF|K\8lLu(B
> .Sh $BL>>N(B
> .Nm frexp
> .Nd $BIbF0>.?tE@?t$r>.?tIt$H@0?tIt$KJQ49(B
> 
> $B$3$l$@$1FI$`$H<B?t$N@0?tIt$H>.?tE@0J2<$H$KJ,$1$k4X?t$N$h$&$K;W$($F$7$^$$$^$9!#(B
$B$G$b!"=q<0$N(B
     double
     frexp(double value, int *exp);
$B$^$GFI$a$P!"(B(int)value $B$,Bg$-$$>l9g$K(B *(int *)exp $B$K3JG<$G$-$J$$$N$G!"(B
$B$=$&$G$O$J$5$=$&$@$H;W$$$^$9$h$M(B ;-)

> $B<B:]$K$O!X@55,2=$5$l$?!YIbF0>.?tE@?t$N>.?tIt$H;X?tIt$KJ,$1$k4X?t$@$H;W$&$N$G$9$,!#(B
> ($BNc$($P(B 1.bbbbbbb $B!_(B 2 ^ N $B$r(B 1bbbbbbb $B$H(B N $B$KJ,$1$k(B )
> 
> .Nd $B@55,2=$5$l$?IbF0>.?tE@?t$r>.?tIt$H;X?tIt$KJQ49(B
> 
> $B$HJdLu$7$?J}$,$h$$$N$G$O$J$$$G$7$g$&$+(B?
$B@55,2=$5$l$F$$$J$$IbF0>.?tE@?t$b(B frexp(3) $B$,=hM}BP>]$H$7$F$$$k$J$i!"(B
$B!V@55,2=$5$l$?IbF0>.?tE@?t$r!D!W$H$$$&8BDj$O8m$j$G$7$g$&!#(B
$BNc$($P!";X?t%S%C%H$,$9$Y$F(B 0 $B$N(B IEEE $BIbF0>.?tE@?t$O!"@55,2=$5$l$F$$$J$$(B
$B$G$9$h$M!#(B

$B86J8$,(B
o Get mantissa and exponent of floating-point value.
  http://www.opengroup.org/onlinepubs/007908799/xsh/frexp.html
$B$H$J$C$F$$$l$P!"!VIbF0>.?tE@?t$+$i2>?tIt$H;X?tIt$r<h$j=P$9!W$J$I$H(B
$B$9$Y$-$H$O;W$$$^$9!#(B

FreeBSD $B$N(B frexp(3) $B$O@07A$7$F$b(B 33 $B9T$7$+$J$$$G$9$7!"1QJ8$G$bOBJ8$G$b(B
$B$7$C$+$jFI$s$G$$$?$@$/$H$$$&$3$H$G$O$@$a$G$9$+!)(B

$B$"$H!"(B
  .Fn frexp
  $B4X?t$O!"<!$N$h$&$JCM(B
  .Em x
  $B$rJV$7$^$9!#(B
  $B$9$J$o$A(B
  .Em x
- $B$O!"6h4V(B
  $B$O!"Bg$-$5$,6h4V(B
  .Bo 1/2 , 1 Pc
  $B$KF~$k$+$b$7$/$O(B 0 $B$N(B
  .Em double
  $BCM$G$"$j!"$=$l$K(B 2 $B$N(B
  .Fa *exp
  $B>h$r3]$1$k$H(B
  .Fa value
  $B$HEy$7$/$J$j$^$9!#(B
$B$H$7$J$$$H!"(Bvalue $B$,Ii$N>l9g$K@5$7$/$J$$$G$9$7!"86J8(B
     The frexp() function returns the value x, such that x is a double with
     magnitude in the interval [1/2, 1) or zero, and value equals x times 2
     raised to the power *exp.
$B$N!V(Bwith magnitude in ...$B!W$N0UL#$r7gMn$5$;$F$7$^$C$F$$$?$N$G!"D>$7$F(B
$B$*$/$D$b$j$G$9!#(B
--
$BKY@nOBM:(B
