Raul asked off-list for the definitions of gcd2x and foo.
I doubt if this is the problem, but fwiw, I didn't bother defining foo
(!),
while here is Cliff's gcd2x . (After all, the Windows Js don't have
any trouble just loading the script, even with an undefined foo.)
NB. From Cliff Reiter 2/4/23
NB. I dug up an old extended gcd to build an adverb for modular divide
NB. Find the gcd of two numbers
NB. and coef giving gcd as a linear combination of y
gcd2x=: 3 : 0
'r0 r1'=.y
's0 s1'=.1 0x
't0 t1'=.0 1x
while. r1 ~: 0 do.
q=. r0 <.@% r1
'r0 r1'=. r1,r0-q*r1
's0 s1'=. s1,s0-q*s1
't0 t1'=. t1,t0-q*t1
end.
r0,s0,t0
)
Cheers,
Mike
On 10/07/2023 20:19, 'Mike Day' via Programming wrote:
Sorry, that was a bit ambiguous. I meant that load '...finite...' still
results
in a syntax error if "gcd2x" is replaced by "foo", in JIOS on this iPad.
I don't now have J903 beta-k on the laptop, so can't investigate whether it's
an
old beta problem.
Not desperately important, but puzzling,
Cheers,
Mike
Sent from my iPad
On 10 Jul 2023, at 19:15, Mike Day <mike_liz....@tiscali.co.uk> wrote:
A gcd function, courtesy Cliff Reiter, but I get the same with a generic
"foo" fn.
"mi" isn't invoked by the load.
M
Sent from my iPad
On 10 Jul 2023, at 18:23, Raul Miller <rauldmil...@gmail.com> wrote:
What is gcd2x?
--
Raul
On Mon, Jul 10, 2023 at 12:49 PM 'Mike Day' via Programming
<programm...@jsoftware.com> wrote:
I'm probably missing the blindingly obvious but why does this happen in JIOS on my
iPad but not in J903, J9.4 & J9.5 under Windows?
JVERSION
Engine: j903/j64/iOS
beta-k: GPL3/2023-04-16T23:21:00
Platform: iOS/iPadOS
Version: 903.2 57
Installer: App Store
Contact: www.jsoftware.com
load'~user/finite.ijs' NB. or any implicit load of finite.ijs
|syntax error
| mi=: {{'r0 s0 t0'=:gcd2x m,y...}}"0
|[-277]
/private/var/mobile/Containers/Data/Application/219E805B-EDC1-4B43-858D-814C13F48E94/Documents/j/user/finite.ijs
Here's mi:
NB. adverb giving divide (inverse) mod m
mi=: {{
'r0 s0 t0'=:gcd2x m,y
if. r0=1 do. m|t0 else. 1r0 end.
:
m|x*m mi y
}}"0
This "syntax error" also occurs when using the alternative method of definition,
mi =: 1 : 0"0
...
)
Thanks,
Mike
Sent from my iPad
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