[NetBehaviour] How to display code-based art...

[Pall Thayer]

Actually, the mistake is understandable, in Perl we just do:

foreach(0..999999){ whatever; }

I don't know... can you do that in C?


On Mon, Sep 7, 2009 at 9:48 PM, Pall Thayer<pallthay at gmail.com> wrote:
> Ah haha... oops.
>
> Even so, after fixing there's no difference. I get the feeling that
> it's doing the same thing to both regardless of the funroll flag. Is
> there any way to see what it actually does?
>
>
> On Mon, Sep 7, 2009 at 9:14 PM, james morris<james at jwm-art.net> wrote:
>>
>> try this just to see what is happening:
>>
>> --------8<------------
>>
>> #include<stdio.h>
>>
>> int main()
>> {
>>    int i;
>>    for(i=0;i <= 999999999;i++){
>>        printf("i1:%d\n",i);
>>        for(i=0;i <= 999999999;i++){
>>            printf("i2:%d\n",i);
>>            for(i=0;i <= 999999999;i++){
>>                printf("i3:%d\n",i);
>>                for(i=0;i <= 999999999;i++){
>>                    printf("i3:%d\n",i);
>>                    for(i=0;i <= 999999999;i++){
>>                        printf("i3:%d\n",i);
>>                        for(i=0;i <= 999999999;i++){
>>                        }
>>                    }
>>                }
>>            }
>>        }
>>    }
>>    return 0;
>> }
>>
>> --------8<------------
>>
>> so what you actually wanted was:
>>
>> --------8<------------
>>
>> #include<stdio.h>
>>
>> int main()
>> {
>>    int i;
>>    for(i=0;i <= 999999999;i++){
>>        int i;
>>        for(i=0;i <= 999999999;i++){
>>            int i;
>>            for(i=0;i <= 999999999;i++){
>>                int i;
>>                for(i=0;i <= 999999999;i++){
>>                    int i;
>>                    for(i=0;i <= 999999999;i++){
>>                        int i;
>>                        for(i=0;i <= 999999999;i++){
>>                            printf("Hello World");
>>                        }
>>                    }
>>                }
>>            }
>>        }
>>    }
>>    return 0;
>> }
>>
>> --------8<------------
>>
>> which still does not result in any size difference!
>>
>> james.
>>
>>
>> On 7/9/2009, "Pall Thayer" <pallthay at gmail.com> wrote:
>>
>>>I don't know what I'm doing wrong but I'm not seeing a size difference
>>>in these two compilations:
>>>
>>>gcc -funroll-loops infinite.c -o infinite
>>>gcc infinite.c -o infinite2
>>>
>>>of this code:
>>>
>>>#include<stdio.h>
>>>
>>>main()
>>>{
>>>    int i;
>>>    for(i=0;i <= 999999999;i++){
>>>    for(i=0;i <= 999999999;i++){
>>>    for(i=0;i <= 999999999;i++){
>>>    for(i=0;i <= 999999999;i++){
>>>    for(i=0;i <= 999999999;i++){
>>>    for(i=0;i <= 999999999;i++){
>>>        printf("Hello World");
>>>    }
>>>
>>>    }
>>>
>>>    }
>>>
>>>    }
>>>
>>>    }
>>>
>>>    }
>>>
>>>}
>>>
>>>
>>>On Mon, Sep 7, 2009 at 6:37 PM, james morris<james at jwm-art.net> wrote:
>>>>
>>>> On 7/9/2009, "Pall Thayer" <pallthay at gmail.com> wrote:
>>>>
>>>>>What exactly happens when you try to unroll an infinite loop?
>>>>
>>>> http://en.wikipedia.org/wiki/Loop_unwinding#A_simple_example
>>>>
>>>> might shed some light on what might happen.
>>>>
>>>> james.
>>>>
>>>>>On Mon, Sep 7, 2009 at 6:14 PM, james morris<james at jwm-art.net> wrote:
>>>>>>
>>>>>> On 6/9/2009, "Rob Myers" <rob at robmyers.org> wrote:
>>>>>>
>>>>>>>On 06/09/09 22:23, james morris wrote:
>>>>>>>>
>>>>>>>>> You could unroll loops in the code manually using templates for
>>>>>>>>> different sections of the code. Or instantiate objects with other templates.
>>>>>>>>
>>>>>>>> Eurgh that's made me feel quite sick.
>>>>>>>
>>>>>>>It's a good job I didn't mention colouring in the letters to represent
>>>>>>>the compiled code then. ;-)
>>>>>>>
>>>>>>
>>>>>> I don't know about that. It was just the image of having something
>>>>>> physical - a large roll of paper - with code stenciled into it, and
>>>>>> applying the GNU C Compiler's  -funroll-loops optimization to it, ++
>>>>>> that with C++ Templates, and stencils, templates, loops, and rolls. Spun
>>>>>> my head right round, and it was to me, pure genius of you to think of it
>>>>>> like that. I never thought jokes about programming could be so funny!!!!
>>>>>> Because all that I saw in Pall's stencil was a visual stencil of some
>>>>>> code, which looked quite attractive in a certain way.
>>>>>> _______________________________________________
>>>>>> NetBehaviour mailing list
>>>>>> NetBehaviour at netbehaviour.org
>>>>>> http://www.netbehaviour.org/mailman/listinfo/netbehaviour
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>--
>>>>>*****************************
>>>>>Pall Thayer
>>>>>artist
>>>>>http://www.this.is/pallit
>>>>>*****************************
>>>>>_______________________________________________
>>>>>NetBehaviour mailing list
>>>>>NetBehaviour at netbehaviour.org
>>>>>http://www.netbehaviour.org/mailman/listinfo/netbehaviour
>>>>>
>>>> _______________________________________________
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>>>> NetBehaviour at netbehaviour.org
>>>> http://www.netbehaviour.org/mailman/listinfo/netbehaviour
>>>>
>>>
>>>
>>>
>>>--
>>>*****************************
>>>Pall Thayer
>>>artist
>>>http://www.this.is/pallit
>>>*****************************
>>>_______________________________________________
>>>NetBehaviour mailing list
>>>NetBehaviour at netbehaviour.org
>>>http://www.netbehaviour.org/mailman/listinfo/netbehaviour
>>>
>> _______________________________________________
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>>
>
>
>
> --
> *****************************
> Pall Thayer
> artist
> http://www.this.is/pallit
> *****************************
>



-- 
*****************************
Pall Thayer
artist
http://www.this.is/pallit
*****************************