Re: Real_Arrays on heap with overloaded operators and clean syntax

[Rod Kay <rodakay5@gmail.com>]

On 23/1/23 10:34, Rod Kay wrote:
> On 23/1/23 10:20, Jim Paloander wrote:
>>>> Dear ADA lovers,
>>>> with stack allocation of Real_Vector ( 1 .. N ) when N >= 100,000 I 
>>>> get STACK_OVERFLOW ERROR while trying to check how fast operator 
>>>> overloading is working for an expression
>>>>
>>>> X := A + B + C + C + A + B, where
>>>> A,B,C,X are all Real_Vector ( 1 .. N ).
>>>>
>>>> So my only option was to allocate on the heap using new. But then I 
>>>> lost the clean syntax
>>>>
>>>> X := A + B + C + C + A + B
>>>>
>>>> and I had to write instead:
>>>>
>>>> X.all := A.all + B.all + C.all + C.all + A.all + B.all.
>>>>
>>>> This is really ugly and annoying because when you are using 
>>>> Real_Arrays for implementing some linear algebra method who relies 
>>>> heavilly on matrix vector products and vector updates, you do need 
>>>> to allocate on the heap (sizes are determined in runtime) and you do 
>>>> need a clean syntax. So, is there any way to simplify my life 
>>>> without using the .all or even without declaring A,B,C,X as access 
>>>> Real_Vector?
>>>> Thanks for your time!
>>> If you are on linux, then you could set the stack size with
>>>
>>> $ ulimit -s unlimited
>>> $ launch_my_app
>>>
>>>
>>>
>>> Regards.
>> On Windows 10 with mingw64?
> 
>     Not sure. I don't have a windows machine.
> 
>     What happens when try ?
> 
>        $ ulimit -a


ulimit is available on cygwin.

It is not available on mingw64 then ?