Rational 1.08

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:28894] Re: rational 1.08”
on Wed, 28 Jun 2006 23:13:34 +0900, Yukihiro M.
[email protected] writes:

||>“9_.9".to_f #=> 9.9
||
||Float("9
._9”) e$B$O$I$&$7$^$9!)8=>u$G$ONc30$G$9$,!#e(B
|
|e$B$“$”!"$4$a$s$J$5$$!#$3$l$Oe(Bto_ie$B$G$be(Bto_fe$B$G$b%<%m$K$J$k$Y$-$G$9!#e(B
|e$B$G!"e(BFloat()e$B$G$ONc30!#e(B

e$B$“!”$9$_$^$;$s!#e(BFloat()e$B$GNc30$O$=$NDL$j$J$s$G$9$,!"e(Bto_ie$B$G$Oe(B9e$B!"e(B
to_fe$B$G$Oe(B9.0e$B$K$J$k$Y$-$G$7$?!#e(B

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:28892] Re: rational 1.08”
on Wed, 28 Jun 2006 22:58:08 +0900, “Shigeo Kobayashi”
[email protected] writes:

|> |‘+’ or ‘-’ e$B$N8e$m$O!V@hF,!W$J$N$G$7$g$&$+!)e(B
|>
|> e$B$O$$!#?t;z$N4V$Ke(B _ e$B$r5v$9$H2r<a$7$F$/$@$5$$!#e(B
|“._02”.to_f => 0.0 e$B$bF1MM$G$9$M!#e(B

e$B$=$&$$$&$3$H$G$9$M!#e(B

|> e$B$=$&$J$s$G$9$+!#e(Bee$B$Oe(Bexponentiale$B$@$HJ9$$$F$$$^$9$,!“$3$N>l9g$Ne(B
|> d/De$B$O$I$&$$$&0UL#$J$s$G$7$g$&$+!#e(B
|e$B:#99e(BFORTRANe$B$bL5$$$h$&$J5$$b$7$^$9$1$I!”@N$N4QB,%G!<%?e(B
|e$BEy$K$O7k9=$“$j$^$9!#$3$3$i$X$s$O!”$^$!5$;}$A$NLdBj$G!"%j%Fe(B
|e$B%i%k$r4:$($FA}$d$9$[$I$N;v$b$J$$$H8@$($J$/$b$J$$$G$9$M$'!%!%!%e(B

e$B$=$&$G$9$M$(!#B>$NJ}$N$40U8+$bJ9$-$?$$$H;W$$$^$9!#e(B

|> e$B<g$K@0?t$G$9$,!“#37ee(B(e$B$”$k$$$O#47ee(B)e$B$4$H$N6h@Z$j$H$7$F;H$($k$he(B
|> e$B$&$Ke(B _ e$B$r5v$7$F$$$^$9!#$3$l$Oe(BPerle$B$G$bF1MM$G$9!#e(B
|e$B$“$”!“$=$&$J$s$G$9$M!De(B
|e$B$&!<$s!“2?$+M}M3$,$”$k$N$G$7$g$&$,!”;d$J$ie(B
| “1,000”.to_i ==> 1000
|e$B$NJ}$,!J>/$7!K$&$l$7$$$G$9!#e(B

e$B$^$“!“e(BRubye$B$N%j%F%i%k$H$7$Fe(B ,
e$B$O$”$j$($^$;$s$+$i!#$*$^$1$K#3e(B
e$B7e6h@Z$j$NJ8;z$O9q$4$H$KJQ2=$9$k$7e(B(e$B%h!<%m%C%Q$G$O>.?tE@$H;0e(B
e$B7e6h@Z$j$NJ8;z$,H?BP$K$J$k9q$,$”$ke(B)e$B!#e(B

e$BLZB<$G$9!#e(B

Shigeo Kobayashi e$B$5$s$O=q$-$^$7$?e(B (2006/06/28 22:58):

e$B$&!<$s!“2?$+M}M3$,$”$k$N$G$7$g$&$,!";d$J$ie(B
“1,000”.to_i ==> 1000
e$B$NJ}$,!J>/$7!K$&$l$7$$$G$9!#e(B

e$B%h!<%m%C%QJ}LL$G$O>.?tE@5-9f$Ke(B’,‘e$B$r!"5U$Ke(B’.'e$B$rB?7e$r6h@Z$ke(B
e$B5-9f$H$7$F;H$&$i$7$$$N$G!"$=$&$$$&<BAu$OLLE]$rM6$$9~$`e(B
e$B85$K$J$C$F$7$^$&$N$G$O$J$$$G$7$g$&$+e(B?

e$B86$G$9!#e(B

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

||>“9_.9".to_f #=> 9.9
||
||Float("9
._9”) e$B$O$I$&$7$^$9!)8=>u$G$ONc30$G$9$,!#e(B
|
|e$B$"$"!"$4$a$s$J$5$$!#$3$l$Oe(Bto_ie$B$G$be(Bto_fe$B$G$b%<%m$K$J$k$Y$-$G$9!#e(B
|e$B$G!"e(BFloat()e$B$G$ONc30!#e(B

e$B$"!"$9$_$^$;$s!#e(BFloat()e$B$GNc30$O$=$NDL$j$J$s$G$9$,!"e(Bto_ie$B$G$Oe(B9e$B!"e(B
to_fe$B$G$Oe(B9.0e$B$K$J$k$Y$-$G$7$?!#e(B

e$B$"!"$J$k$[$IM}2r$7$^$7$?!#e(B

e$B$?$1e(B(tk)e$B$G$9e(B

[ruby-dev:28895] Re: rational 1.08 e$B$K$Fe(B
Yukihiro M. [email protected] e$B$5$s[)$/e(B:

||>“9_.9".to_f #=> 9.9
||
||Float("9
._9”) e$B$O$I$&$7$^$9!)8=>u$G$ONc30$G$9$,!#e(B
|
|e$B$“$”!"$4$a$s$J$5$$!#$3$l$Oe(Bto_ie$B$G$be(Bto_fe$B$G$b%<%m$K$J$k$Y$-$G$9!#e(B
|e$B$G!"e(BFloat()e$B$G$ONc30!#e(B

e$B$“!”$9$_$^$;$s!#e(BFloat()e$B$GNc30$O$=$NDL$j$J$s$G$9$,!"e(Bto_ie$B$G$Oe(B9e$B!"e(B
to_fe$B$G$Oe(B9.0e$B$K$J$k$Y$-$G$7$?!#e(B

e$B$I$s$J>lLL$G$@$C$?$+K:$l$F$7$^$C$?$N$G@bF@NO$OL5$$$N$G$9$,!"e(B

e$B!Ve(B_ e$B$O@hF,$G$bKvHx$G$bL5;k$7$F$/$l$?J}$,$"$j$,$?$$$N$K$J!We(B

e$B$H;W$C$?$3$H$,$"$j$^$9!#e(B

e$B!J#a!K!V?t;z$N4V$Ke(B _ e$B$r5v$9!We(B
e$B!J#b!K!V?t;z$N@hF,$b$7$/$OKvHx$Ne(B _ e$B$O5v$5$J$$!We(B

e$B$H$$$&;EMM!J#b!K$NM}M3$O2?$G$7$g$&!)e(B

Take_tk = KUMAGAI Hidetake
e$B$?$1e(B(tk)e$B!a7’C+=(Ipe(B

e$B>.NS!Je(BSpammere$B$8$c$J$$!!!K$G$9!#e(B

----- Original Message -----
From: “KIMURA Koichi” [email protected]
Subject: [ruby-dev:28896] Re: rational 1.08

e$B%h!<%m%C%QJ}LL$G$O>.?tE@5-9f$Ke(B’,‘e$B$r!"5U$Ke(B’.'e$B$rB?7e$r6h@Z$ke(B
e$B5-9f$H$7$F;H$&$i$7$$$N$G!“$=$&$$$&<BAu$OLLE]$rM6$$9~$`e(B
e$B85$K$J$C$F$7$^$&$N$G$O$J$$$G$7$g$&$+e(B?
e$B$”$"$C!"8@MU$,B-$i$J$+$C$?$G$9$M!#e(B

e$BA0$K=q$$$?e(B

rb_normalize_numeric_string(numericlike_string) e$B$N$h$&$Je(B
e$B!!!4X?t$G$^$H$a$i$l$J$$$G$7$g$&$+!)e(B
e$B!!!J7k2L$H$7$Fe(B '+‘e$B!"e(B’-'e$B!“e(B’E’e$B!”?t;z!“$=$l$i0J30$O4^$^$J$$!V0lHLE*$J!We(B
e$B???tCMI=8=$,F@$i$l$k!#!Ke(B
e$B$H4XO”$7$F$$$^$7$F!"%A%g%C%H4QG0E*$G$9$,e(B
sign,int_part,frac_part,exp_sign,exp_part
= rb_normalize_numeric_string(“1,23_4.56E-5_1e$BHs?t;ze(B”)
e$BEy$H=q$$$?>l9ge(B (int_part,frac_part,exp_part e$B$OJ8;zNse(B)
sign = 1
int_part = “1000”
frac_part = “56”
exp_sign = -1
exp_part = “51”

e$B$N$h$&$Ke(B ‘,’ e$B!"e(B’.‘e$B!"e(B’
e$BEy$K0MB8$7$J$$?tCMJ8;zNs$K0lC6JQ49$7$F$+$ie(B
e$B$=$l$>$l$N%/%i%9$,<+J,MQ$NFbIt?tCM$KJQ49$9$k$h$&$K$7$?$ie(B
e$B$I$&$+$H9M$($?$7$@$$$G$9!J@0?t!"IbF0>.?t6&$KBP1~2D!K!#e(B
e$B$=$&$9$l$P%m%1!<%k$H$+$K1~$8$Fe(Brb_normalize_numeric_string()e$BFb$Ne(B
e$BF0:n$rJQ99$9$k$@$1$G:Q$
$^$9$+$i!#e(B

e$B?'!9$H1F6A$b$"$k$7!"C1$J$k;W$$$D$-$H$$$&$3$H$G!%!%!%e(B


e$B>.NSe(B e$BLPM:e(B

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:28899] Re: rational 1.08”
on Thu, 29 Jun 2006 11:55:59 +0900, take_tk [email protected]
writes:

|e$B$I$s$J>lLL$G$@$C$?$+K:$l$F$7$^$C$?$N$G@bF@NO$OL5$$$N$G$9$,!“e(B
|
|e$B!Ve(B_ e$B$O@hF,$G$bKvHx$G$bL5;k$7$F$/$l$?J}$,$”$j$,$?$$$N$K$J!We(B
|
|e$B$H;W$C$?$3$H$,$"$j$^$9!#e(B

e$BM}M3$r;W$$=P$7$?$i$b$&0lEYJ9$-$^$9!#e(B

|e$B!J#a!K!V?t;z$N4V$Ke(B _ e$B$r5v$9!We(B
|e$B!J#b!K!V?t;z$N@hF,$b$7$/$OKvHx$Ne(B _ e$B$O5v$5$J$$!We(B
|
|e$B$H$$$&;EMM!J#b!K$NM}M3$O2?$G$7$g$&!)e(B

e$BK\Mh$NL\E*$G$"$k7e?t$N6h@Z$j$H$$$&4QE@$+$i$=$l$,E,@Z$@$H;W$&e(B
e$B$+$i$G$9!#$^$?!“e(BRubye$B$N?tCM%j%F%i%k$,$=$&$@$+$i!”$H$$$&$N$bM}e(B
e$BM3$G$9!#e(B