Re: Bug in srfi-48?

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On Thu, Oct 12, 2017 at 6:04 AM, Donald Allen <[email protected]>
wrote:


> Thanks for the quick response. From your description of the patch, it
> sounds like you addressed the error that occurs using Gambit. But did
> you also have a look at the odd rounding behavior I reported in my
> first message?
>

earlier:

3> (/ (round (* 1.997554209949891 100)) 100)
> 2.


I get the same result with MIT Scheme.  I must be missing something.  Why
do you consider it wrong?  According to R7RS (and probably earlier versions
of the standard),"round returns the closest integer to x, rounding to even
when x is halfway between two integers."

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">On T=
hu, Oct 12, 2017 at 6:04 AM, Donald Allen <span dir=3D"ltr">&lt;<a href=3D"=
mailto:[email protected]" target=3D"_blank">[email protected]</a>=
&gt;</span> wrote:<br><div>=C2=A0</div><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padd=
ing-left:1ex">
Thanks for the quick response. From your description of the patch, it<br>
sounds like you addressed the error that occurs using Gambit. But did<br>
you also have a look at the odd rounding behavior I reported in my<br>
first message?<br></blockquote><div><br></div><div>earlier:</div><div><br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bo=
rder-left:1px solid rgb(204,204,204);padding-left:1ex"><span style=3D"font-=
size:12.8px">3&gt; (/ (round (* 1.997554209949891 100)) 100)<br></span><spa=
n style=3D"font-size:12.8px">2.</span></blockquote><div><br></div><div>I ge=
t the same result with MIT Scheme.=C2=A0 I must be missing something.=C2=A0=
 Why do you consider it wrong?=C2=A0 According to R7RS (and probably earlie=
r versions of the standard),&quot;round returns the closest integer to x, r=
ounding to even when x is halfway between two integers.&quot;<span style=3D=
"font-size:10pt;font-family:CMR10">=C2=A0</span></div>
=09=09
=09
=09
		</div></div></div>

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