FLUSH_BLOCK
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);
if (bflush) FLUSH_BLOCK(s, 0);
FLUSH_BLOCK(s, 1);
FLUSH_BLOCK(s, 0);