void BitMatrixSlice::randomize(int row, PRNG& G)
{
const int block_size = RAND_SIZE / sizeof(bm.squares[0].rows[0]);
auto iSquare = bm.squares.begin() + start;
for ( ; iSquare < bm.squares.end() - block_size; )
{
G.next();
for (int j = 0; j < block_size; j++)
(iSquare++)->rows[row] = G.get_doubleword_no_check();
}
for ( ; iSquare < bm.squares.end(); iSquare++)
iSquare->randomize(row, G);
}
