diff options
Diffstat (limited to 'archival/gzip.c')
| -rw-r--r-- | archival/gzip.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/archival/gzip.c b/archival/gzip.c index 783a453a7..fa6e85b66 100644 --- a/archival/gzip.c +++ b/archival/gzip.c @@ -732,25 +732,26 @@ static unsigned match_start; /* start of matching string */ static int eofile; /* flag set at end of input file */ static unsigned lookahead; /* number of valid bytes ahead in window */ -static const unsigned max_chain_length = 4096; +enum { + max_chain_length = 4096, /* To speed up deflation, hash chains are never searched beyond this length. * A higher limit improves compression ratio but degrades the speed. */ -static const unsigned int max_lazy_match = 258; + max_lazy_match = 258, /* Attempt to find a better match only when the current match is strictly * smaller than this value. This mechanism is used only for compression * levels >= 4. */ -#define max_insert_length max_lazy_match + max_insert_length = max_lazy_match, /* Insert new strings in the hash table only if the match length * is not greater than this length. This saves time but degrades compression. * max_insert_length is used only for compression levels <= 3. */ -static const unsigned good_match = 32; + good_match = 32, /* Use a faster search when the previous match is longer than this */ @@ -761,12 +762,13 @@ static const unsigned good_match = 32; * found for specific files. */ -static const int nice_match = 258; /* Stop searching when current match exceeds this */ + nice_match = 258 /* Stop searching when current match exceeds this */ /* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4 * For deflate_fast() (levels <= 3) good is ignored and lazy has a different * meaning. */ +}; #define EQUAL 0 /* result of memcmp for equal strings */ |