tree ccb2cf4ee7f9f8713706d77dd8289178e2fbb7b1
parent 47cb41295751ee1b1b7e0acbfb847ea24324d5aa
author Mark Adler <madler@alumni.caltech.edu> 1541356306 -0800
committer Mark Adler <madler@alumni.caltech.edu> 1541356306 -0800

Add crc32_combine_gen() and crc32_combine_op() for fast combines.

When the same len2 is used repeatedly, it is faster to use
crc32_combine_gen() to generate an operator, that is then used to
combine CRCs with crc32_combine_op().