11:23 a.m.
Dear all,
It seems to be a non-standard
precedence:
(10^-5)^2 is evaluated as 10^((-5)^2)
Oleh
11:46 a.m.
New subject: eval (10^-5)^2 URGENT!!!! CORE ARITHMETIC!!!!
It looks like the tokenizer
ignores brackets!
(10^-5)^2 outputs the same as
10^-5^2
Oleh
7 квітня 2016, 17:23:45, від oleg_komashko(a)ukr.net:
Dear all,
It seems to be a non-standard
precedence:
(10^-5)^2 is evaluated as 10^((-5)^2)
Oleh
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11:58 a.m.
New subject: eval (10^-5)^2 URGENT!!!! CORE ARITHMETIC!!!!
On Thu, 7 Apr 2016, oleg_komashko(a)ukr.net wrote:
It looks like the tokenizer
ignores brackets!
(10^-5)^2 outputs the same as
10^-5^2
There's a bug here alright, but parentheses are not ignored in
general:
? eval 3-2*4
-5
? eval (3-2)*4
4
The bug is specific to successive instances of the exponentiation
operator, a case which requires special treatment to impose the most
common order of evaluation of x^y^z. Apparently a (fairly recent)
change to the "genr" apparatus has broken the special treatment code.
It'll be fixed soon.
Allin
12:07 p.m.
New subject: eval (10^-5)^2 URGENT!!!! CORE ARITHMETIC!!!!
Am 07.04.2016 um 16:58 schrieb Allin Cottrell:
The bug is specific to successive instances of the exponentiation
operator, a case which requires special treatment to impose the most
common order of evaluation of x^y^z.
I note that this exception of operator precedence is duly mentioned in
the command reference! (Don't just want to speak up whenever something
is missing...)
-sven
12:50 p.m.
New subject: eval (10^-5)^2 URGENT!!!! CORE ARITHMETIC!!!!
On Thu, 7 Apr 2016, Allin Cottrell wrote:
On Thu, 7 Apr 2016, oleg_komashko(a)ukr.net wrote:
> It looks like the tokenizer
> ignores brackets!
>
> (10^-5)^2 outputs the same as
> 10^-5^2
There's a bug here alright, but parentheses are not ignored in general:
? eval 3-2*4
-5
? eval (3-2)*4
4
The bug is specific to successive instances of the exponentiation
operator, a case which requires special treatment to impose the most
common order of evaluation of x^y^z. Apparently a (fairly recent)
change to the "genr" apparatus has broken the special treatment
code. It'll be fixed soon.
Now fixed in git and snapshots.
Allin
2:33 p.m.
New subject: eval (10^-5)^2 URGENT!!!! CORE ARITHMETIC!!!!
On Thu, 7 Apr 2016, Sven Schreiber wrote:
Am 07.04.2016 um 17:50 schrieb Allin Cottrell:
>
> Now fixed in git and snapshots.
>
Now that was a real bug-squashing frenzy today... Certainly worthy of a new
release.
I agree, but I might just mention, that particular bug was new since
the last release.
Allin
11:47 a.m.
Yes, something is going wrong
? c=(2^3)^2
Se ha generado el escalar c = 512
El 07/04/16 a las 16:23, oleg_komashko(a)ukr.net escribió:
Dear all,
It seems to be a non-standard
precedence:
(10^-5)^2 is evaluated as 10^((-5)^2)
Oleh
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http://lists.wfu.edu/mailman/listinfo/gretl-devel
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Ignacio Díaz-Emparanza
Departamento de Economía Aplicada III (Econometría y Estadística)
Universidad del País Vasco - Euskalherriko Unibertsitatea, UPV/EHU
Tfno: (+34) 94 601 3732
http://www.ehu.eus/ea3
3421
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3421
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7 comments
4 participants
participants (4)
-
Allin Cottrell -
Ignacio Diaz-Emparanza -
oleg_komashko＠ukr.net -
Sven Schreiber