* Re: (sqrt long-digit-string)
@ 2003-02-11 18:25 Nelson H. F. Beebe
2003-02-12 5:35 ` Dale P. Smith
0 siblings, 1 reply; 2+ messages in thread
From: Nelson H. F. Beebe @ 2003-02-11 18:25 UTC (permalink / raw)
Cc: beebe
I just tried the posted example of (sqrt long-digit-string) with
guile 1.6.3 on Sun Solaris and got similar scanner errors.
I then chopped off trailing digits and made repeated experiments.
With an input line of 256 characters, guile reports a reasonable
numeric answer. With 257 characters, it goes into a wait state.
With 258 character, it reports the scanner error.
Evidently, there is some sloppy, and unreasonably limited, buffer
handling going on here. Lisp programs should be able to read tokens
of arbitrary length (limited only by available memory); otherwise,
bignum arithmetic is infeasible.
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* Re: (sqrt long-digit-string)
2003-02-11 18:25 (sqrt long-digit-string) Nelson H. F. Beebe
@ 2003-02-12 5:35 ` Dale P. Smith
0 siblings, 0 replies; 2+ messages in thread
From: Dale P. Smith @ 2003-02-12 5:35 UTC (permalink / raw)
On Tue, 11 Feb 2003 11:25:44 -0700 (MST)
"Nelson H. F. Beebe" <beebe@math.utah.edu> wrote:
> I just tried the posted example of (sqrt long-digit-string) with
> guile 1.6.3 on Sun Solaris and got similar scanner errors.
>
> I then chopped off trailing digits and made repeated experiments.
> With an input line of 256 characters, guile reports a reasonable
> numeric answer. With 257 characters, it goes into a wait state.
> With 258 character, it reports the scanner error.
It works for me in 1.6.3 on intel, using rlb's .debs.
The reader starts out with a token buffer of 30, and then doubles it
each time it overflows. 30 60 120 240 480. It doesn't line up at 256.
Just a hunch. Try it without readline, if you are using it.
-Dale
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Dale P. Smith
Senior Systems Consultant, | Treasurer,
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