Error trying to define a 1,024-bit (128 Byte) Bit Field

Question

I would like to define a large bitfield for the purpose of quickly monitoring the status a very large structure of elements. Here is what I have so far:

#define T         


        

Answer 1

use

 UINT128 blaha;

You're not defining a bitfield.

I'm not sure you understand what a bitfield is. I bitfield is a number of bits. Not an array of structs or similar. What exactly are you expecting that your code should do?

Edit: oh I see now. No, you can't use your own types, just ints.

Try this (untested code):

struct bit1024 {
  unsigned char byte[128];
};
struct bit1024 foo;
void
set(struct bit1024*lala, int n, int v)
{
  lala->byte[n/8] |= 1<<(n % 8);
  if (!v) {
    lala->byte[n/8] ^= 1<<(n % 8);
  }
}
int
get(struct bit1024*lala, int n)
{
  return 1 & (lala->byte[n/8] >> (n % 8));
}