how to make size arguments for reshape function be real integer?

i have error at reshape function for RS Encoder program. like this:

Error using reshape
Size arguments must be real integers.

Error:
     data_realize = reshape(data_acak,8,length(data_acak)/8)';

from syntax i think that's right.

but i don't know if my 'data_acak' is not real integers. cause 'data_acak' is form:

data_masukan=randi(12*8,1);
D=length(data_masukan);
State=[1 0 0 1 0 1 0 1 0 0 0 0 0 0 0];  

for k=1:D
    fdB=bitxor(State(14),State(15));
    State=[fdB State(1:end-1)];
    data_out(k,1)=bitxor(data_masukan(k,1),fdB);
    data_acak = data_out(k,1);
end

EDIT: if i check one by one, value from: data_masukan is 76, data_acak is 76 and value equation length(data_acak)/8 is 0.1250. and that is not integer. but at notice for Reed Solomon Encoder is needed in a decimal.

if i change equation like length(data_acak)*8 or only length(data_acak), i get warning To RESHAPE the number of elements must not change.

so what should i do how to make "data_acak" at 'data_realize' be real integers but also like a notice for RS encoder?

thank you

[Matt J]

if i check one by one, value from: data_masukan is 76, data_acak is 76

Is data_masukan really supposed to be a scalar? If so, why do you need a loop over k=1:D to process it? Since D=1, the loop will only do 1 iteration.

[Walter Roberson]

Do you mean that length() of data_masukan is 96 ?

Answer 1

[Matt J]

Since D=1, you have length(data_acak)/8 equal to 0.125, which is not an integer. Presumably, D is not supposed to be 1, but it's not clear from your code what it should be.

Answer 2

[Walter Roberson]

You have

data_acak = data_out(k,1);

which should probably be

data_acak(k) = data_out(k,1);

But then it is not clear what difference you intend there to be between data_acak and data_out