EWAH_MASK          48 ewah/bitmap.c  	self->words[block] |= EWAH_MASK(pos);
EWAH_MASK          56 ewah/bitmap.c  		self->words[block] &= ~EWAH_MASK(pos);
EWAH_MASK          63 ewah/bitmap.c  		(self->words[block] & EWAH_MASK(pos)) != 0;