[PD] two dimensional array error in an external

[Alexandros Drymonitis]

I was getting the same error, but what I was doing was this:
In the object structure I would write:
float x_iem_filter[5][2];

and in the new function I would write:
x->x_iem_filter[5][2] = {
  {0.1, 0.2},
  {0.3, 0.4}, etc.

different values though, this is an example. Then I would get the error:
overDrive~.c:35:25: error: expected ';' at end of declaration list
        float x_iem_coeff[5][2] = {

What I finally did was create a one dimensional array in the new structure
like this:
float iem_filter[10] = { ten values here };

and in the same function I run this:
for(i = 0; i < 5; i++){
  for(j = 0; j < 2; j++)
    x->x_iem_filter[i][j] = iem_filter[index++];
}

which seems to work


On Sun, Jul 27, 2014 at 9:46 PM, Jonathan Wilkes via Pd-list <
pd-list at lists.iem.at> wrote:

>  On 07/27/2014 01:05 PM, Alexandros Drymonitis wrote:
>
>  I solved it by declaring the array in the object structure like this:
>  float x_iem_coeff[5][2];
>
>  and in the new function I create another, one dimensional array, and run
> a nested for loop and set the local array's elements to x_iem_coeff[5][2]
> one by one. This seemed to work, no errors during compilation. The object
> crashes Pd when the DSP is turned on, but I guess (and think) it's
> something else that causes that. The array declaration and initialization
> shouldn't have anything to do with the DSP state, right?
>
>
> On Sun, Jul 27, 2014 at 7:41 PM, Alexandros Drymonitis <adrcki at gmail.com>
> wrote:
>
>>   I'm building an external where I want to create a two dimensional
>> array. I'm following this
>> <http://www.tutorialspoint.com/cprogramming/c_multi_dimensional_arrays.htm>
>> example which works well with the attached test code, but creates an error
>> when I try to compile my external.
>>  The external's code where the array is being declared and initialized is
>> this:
>> float x_iem_coeff[5][2] = {
>>         {0.045535, 1.0277},
>>         {0.161621, 1.2569},
>>         {0.393858, 1.96655},
>>         {1.13986, 4.51667},
>>         {6.36341, 22.7468}
>>     };
>>
>>  which is in the object structure. The error I get is:
>> overDrive~.c:35:25: error: expected ';' at end of declaration list
>>         float x_iem_coeff[5][2] = {
>>                                ^
>>                                ;
>>
>>  I've tried to declare the array in the object structure and initialize
>> it in the new function, but I still got the same error.
>>  Any tips?
>>
>
> In C, you can't initialize inside a struct.  But you should be able to
> initialize outside of it.  What's the error you get when you try that?
>
> -Jonathan
>
>
>
>
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