On Thu, May 19, 2016 at 12:37 AM, Xiao-Yong Jin wrote:
> Now,
> (22⍴8)⊤2⊥63⍴1
> 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
>
> Dyalog does the same thing.
> Can someone please explain to me why?
Because the result of ⊥ doesn't fit into integer and it gets converted to a
floating point numbe
t
0 0 0 1
1 1 1 1
1 0 1 1
0 1 1 1
1 1 0 0
0 0 0 1
1 1 1 1
0 0 1 0
,[3 4],⌿⊃(⊂T)×(1⌽[2]T)(1⌽T←¯1+2×t)
==
Assertion failed: r < rho_rho
in Function: get_shape_item
in file: ./Shape.hh:105
Call sta
∇E[⎕]∇
∇
[0] λ←E ⍵
[1] λ←+/,⍤¯1⊃,/(⊂T)×(1⌽[2]T)(1⌽T←¯1+2×⍵)
∇
E←{+/⍪⊃,/(⊂T)×(1⌽[2]T)(1⌽T←¯1+2×⍵)}
E t
4 ¯4
∇E2[⎕]∇
SEGMENTATION FAULT
-- Stack trace at main.cc:63
---
E2←E
E2
SYNTAX ERROR
E2
^
→
∇E2[⎕]∇
∇
[0] λ←E ⍵
[1] λ←+/,⍤¯1⊃,/(⊂T)×(1⌽[2]T)(1⌽T←¯1+2×⍵)
∇
E2 t
==
Assertion failed: get_ValueType() == TV_FUN
in Function
Now,
(22⍴8)⊤2⊥63⍴1
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Dyalog does the same thing.
Can someone please explain to me why?
> On May 18, 2016, at 1:09 PM, Juergen Sauermann
> wrote:
>
> Hi Kacper,
>
> yes, thanks. Fixed in *SVN 729*.
>
> /// Jürgen
>
>
> On 05/18/2016 07:29 PM,
We need reproducibility, so /dev/urandom isn’t an option.
⎕FIO is a wonderful thing in gnu apl.
I still want something easy to manipulate in apl so I can play with different
ideas easily.
> On May 18, 2016, at 11:56 AM, Juergen Sauermann
> wrote:
>
> Hi Elias,
>
> yes, even better! I was thin
Looking at
https://www.youtube.com/watch?v=DmT80OseAGs
Every thing goes fine (when he says "take" and use "⊃" you write "↑" instead in
gnuapl)
[...]
88 {⍺ ⍵} s44
88 ┌→──┐
↓0 0 0 0│
│0 0 2 1│
│3 0 0 4│
│0 0 0 0│
└───┘
at the minute 03:41 it fail with a syntax e
Hi Kacper,
yes, thanks. Fixed in *SVN 729*.
/// Jürgen
On 05/18/2016 07:29 PM, Kacper Gutowski wrote:
On Wed, May 18, 2016 at 5:09 PM, Xiao-Yong Jin wrote:
(...)
relying on ¯1=2⊥64⍴1 (always a 64-bit signed integer), for which Dyalog
does differently.
I think this is a bug.
-k
On Wed, May 18, 2016 at 5:09 PM, Xiao-Yong Jin wrote:
(...)
> relying on ¯1=2⊥64⍴1 (always a 64-bit signed integer), for which Dyalog
> does differently.
I think this is a bug.
-k
Hi Elias,
yes, even better! I was thinking of */dev/random *but that one blocks
immediately
due to lack of entropy.
/// Jürgen
On 05/18/2016 06:41 PM, Elias Mårtenson wrote:
In that case, one can just open /dev/urandom and read random data from
there. That algorithm is supposed to be cryp
Hi,
does not work because Xiao-Yong is looking for a portable solution.
A simple and fast - although not portable - solution is this:
1. write your favourite RNG in C/C++ (ie. copy the source code
from Numerical
Recipes
and wr
In that case, one can just open /dev/urandom and read random data from
there. That algorithm is supposed to be cryptographically secure.
On 19 May 2016 12:39 a.m., "Juergen Sauermann" <
juergen.sauerm...@t-online.de> wrote:
> Hi,
>
> does not work because Xiao-Yong is looking for a portable solut
How about implementing this as a native quad-function?
On 18 May 2016 at 23:09, Xiao-Yong Jin wrote:
> I translated a simple RNG from the book, Numerical Recipes. APL code is
> slow, probably because of the bit operations. The bit operations are not
> portable, relying on ¯1=2⊥64⍴1 (always a 6
I translated a simple RNG from the book, Numerical Recipes. APL code is slow,
probably because of the bit operations. The bit operations are not portable,
relying on ¯1=2⊥64⍴1 (always a 64-bit signed integer), for which Dyalog does
differently. I’d welcome some suggestions. Full code follows
⍶ is the left argument to a monadic or dyadic operator that takes
a function as an argument AND one or two actual arguments.
⍹ is the right (optional) second argument. Keep in mind that these
can also be data, not just a function.
A couple of other examples:
-foldleft 1 2 3 4 5 <—> 1-(2-(3-(4-5))
Thanks for the question. As newbie, now i learned ]help and also ⍶ ⍹
I was on the "research" of how to define user operator too.
I like ⍶ ⍹ better than Dyalog's ⍺⍺ and ⍵⍵
because { ⍺⍺⍺⍵⍵⍵ } will return a vector of ⍺ ⍺ ⍺ ⍵ ⍵ ⍵ on GNU APL,
with Dyalog, one has to add "space" to not confuse with oper
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