Bug - matrix limit

Forum|Forum|8 years ago
March 28, 2018
3 replies
3274 views

I seem to have found a bug in Prime 4.0. When specifying an array of 4767 elements it stops working. But only if the program is defined as [a b]:=, it works fine if it's a:=. This picture explains it better than I can. So, I have a work around, but my questions are:

a.) It's a bug, right?

b.) Any reason why it would do that?

Thanks,

1_Big-Matrix-Creation-Bug.zip

Physics

L

LucMeekes

23-Emerald IV

For the situation where it works. What are the values of a and b following the assignment.

(Of course) this works with no problem in Mathcad 11. But I get this:

That is: a and b are each the same set of two vectors.

Success!
Luc

D

DJF

Author

16-Pearl

I get this as results when it works. (just what I'd expect to get)

The workaround gives this:

W

Werner_E

25-Diamond I

I can only confirm that its a bug in Prime.

There is no problem of that kind in Mathcad 15

When I go up to 10^7 I get a "System.OutOfMemoryException".

W

Werner_E

25-Diamond I

The error even occurs if we don't create variables in the program and don't calculate anything!

The error message tells us that either an overflow occured or an infinite recursion ... sure!

D

DJF

Author

16-Pearl

I'd forgotten about this bug until it bit me again today. But what is strange is that this case works fine in Prime 4, 5 and 6. But in 7 I get the error. (don't have v8 to test)

.