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gzip: code shrink

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function                                             old     new   delta
pack_gzip                                            861     838     -23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2018-01-31 15:42:45 +01:00
parent 468731a86b
commit 8fd35a1fa6
1 changed files with 8 additions and 4 deletions
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12
archival/gzip.c
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@@ -2049,20 +2049,24 @@ static void ct_init(void)
n = 0;
while (n <= 143) {
G2.static_ltree[n++].Len = 8;
G2.bl_count[8]++;
//G2.bl_count[8]++;
}
//G2.bl_count[8] = 143 + 1;
while (n <= 255) {
G2.static_ltree[n++].Len = 9;
G2.bl_count[9]++;
//G2.bl_count[9]++;
}
G2.bl_count[9] = 255 - 143;
while (n <= 279) {
G2.static_ltree[n++].Len = 7;
G2.bl_count[7]++;
//G2.bl_count[7]++;
}
G2.bl_count[7] = 279 - 255;
while (n <= 287) {
G2.static_ltree[n++].Len = 8;
G2.bl_count[8]++;
//G2.bl_count[8]++;
}
G2.bl_count[8] = 287 - 279 + (143 + 1);
/* Codes 286 and 287 do not exist, but we must include them in the
* tree construction to get a canonical Huffman tree (longest code
* all ones)