work_factor       494 ext/bz2/bz2.c  					  work_factor = 0, /* Work factor for compression algorithm */
work_factor       520 ext/bz2/bz2.c  		work_factor = zwork_factor;
work_factor       523 ext/bz2/bz2.c  	error = BZ2_bzBuffToBuffCompress(dest, &dest_len, source, source_len, block_size, 0, work_factor);