int fixed(unsigned char i)
{
        return i & FIXMASK;
}

void fix(unsigned char *i)
{
        *i |= FIXMASK;
}

void printmatrix(unsigned char matrix[NinN][NinN])
{
        int i,j;

        for (i = 0; i < NinN; i++){
                for (j = 0; j < NinN; j++)
                        printf("%d ", matrix[i][j] & ~FIXMASK);
                printf("\n");
        }
}