Use only 16 bits for symbol frequencies

[wimlib] / src / xpress-compress.c

diff --git a/src/xpress-compress.c b/src/xpress-compress.c
index 2b3a6a6e9d980a14ce7ca2e6f062b5505c53656a..d131ada5d277038e564b929c0c514c302caf9f31 100644 (file)
--- a/src/xpress-compress.c
+++ b/src/xpress-compress.c
@@ -90,7 +90,7 @@ static int xpress_write_compressed_literals(struct output_bitstream *ostream,
 
 static u32 xpress_record_literal(u8 literal, void *__freq_tab)
 {
-       u32 *freq_tab = __freq_tab;
+       freq_t *freq_tab = __freq_tab;
        freq_tab[literal]++;
        return literal;
 }
@@ -121,7 +121,7 @@ static u32 xpress_record_match(unsigned match_offset, unsigned match_len,
        u32 len_hdr = min(adjusted_match_len, 0xf);
        u32 offset_bsr = bsr32(match_offset);
        u32 sym = len_hdr | (offset_bsr << 4) | XPRESS_NUM_CHARS;
-       ((u32*)freq_tab)[sym]++;
+       ((freq_t*)freq_tab)[sym]++;
        return adjusted_match_len | (match_offset << 16);
 }
 
@@ -159,7 +159,7 @@ int xpress_compress(const void *__uncompressed_data, unsigned uncompressed_len,
        u8 *compressed_data = __compressed_data;
        struct output_bitstream ostream;
        u32 match_tab[uncompressed_len];
-       u32 freq_tab[XPRESS_NUM_SYMBOLS];
+       freq_t freq_tab[XPRESS_NUM_SYMBOLS];
        u16 codewords[XPRESS_NUM_SYMBOLS];
        u8 lens[XPRESS_NUM_SYMBOLS];
        unsigned num_matches;