Date: Fri, 31 Jul 2015 12:34:28 -0400
> > Subject: [Jprogramming] multiplication bug
> >
> > I tried it in
> >
> >9!:14 ''
> > j803/2014-10-19-11:11:11
> >
> > What is the latest and greatest these days?
> > Also, is your result same for
I'm still on J803, but J804 has been released.
> From: ns...@hotmail.com
> To: programm...@jsoftware.com
> Date: Fri, 31 Jul 2015 12:34:28 -0400
> Subject: [Jprogramming] multiplication bug
>
> I tried it in
>
>9!:14 ''
> j803/2014-10-19-11:11:11
I tried it in
9!:14 ''
j803/2014-10-19-11:11:11
What is the latest and greatest these days?
Also, is your result same for |.
> Jon Hough jghough at outlook.com
> Fri Jul 31 16:24:33 UTC 2015
> Hmm... I tried it and I got
> P&|@*/ mul
>
> 346052331
.com
>> To: programm...@jsoftware.com
>> Date: Fri, 31 Jul 2015 12:16:20 -0400
>> Subject: [Jprogramming] multiplication bug
>>
>> i am trying to multiply several integers modulo small prime number here and
>> fail at that.
>>
>> ---
loat. This fixes it on 32 bit.
P=:9x+1e9
mul=.1+pr (P&|@^) 2x (P&|@*) pw
P&|@*/ |. mul
39355325
P&|@*/ mul
39355325
From: Andrew Nikitin
To: J programming
Sent: Friday, July 31, 2015 12:16 PM
Subject: [Jprogramming] multiplication
Hmm... I tried it and I got
P&|@*/ mul
346052331
> From: ns...@hotmail.com
> To: programm...@jsoftware.com
> Date: Fri, 31 Jul 2015 12:16:20 -0400
> Subject: [Jprogramming] multiplication bug
>
> i am trying to multiply several integers modulo small prime number he
i am trying to multiply several integers modulo small prime number here and
fail at that.
NB. highest power of prime x that divides !y
pffact=:([: +/ ] <.@% [ ^ 1 + [: i. <.@^.)
P=:9+1e9
pw=.1e9 pffact">~ pr=.p:i.240 NB. first few primes and their powers
