diff options
Diffstat (limited to 'src/support/huffman.c')
| -rw-r--r-- | src/support/huffman.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/src/support/huffman.c b/src/support/huffman.c index 1e1aaeab5b5..05612cdbe80 100644 --- a/src/support/huffman.c +++ b/src/support/huffman.c @@ -230,19 +230,19 @@ set_codes(WT_FREQTREE_NODE *node, * lower-order bits for consecutive numbering. */ if (len < MAX_CODE_LENGTH && - ((half = 1 << (remaining - 1)) < node->left->weight || - half < node->right->weight)) { - pattern = pattern << remaining; + ((half = (uint16_t)(1 << (remaining - 1))) < + node->left->weight || half < node->right->weight)) { + pattern = (uint16_t)(pattern << remaining); len = MAX_CODE_LENGTH; } if (len < MAX_CODE_LENGTH) { - patternleft = (pattern << 1) | 0; - patternright = (pattern << 1) | 1; + patternleft = (uint16_t)((pattern << 1) | 0); + patternright = (uint16_t)((pattern << 1) | 1); len++; } else { /* "low bit mode" */ patternleft = pattern; - patternright = pattern + node->left->weight; + patternright = (uint16_t)(pattern + node->left->weight); /* len unchanged */ } @@ -284,12 +284,12 @@ make_table(WT_SESSION_IMPL *session, uint8_t *code2symbol, * than necessary, we allocate (2 ^ max-code-length) of them. */ c = codes[i].pattern; - shift = max_depth - len; + shift = (uint8_t)(max_depth - len); c1 = (uint32_t)c << shift; c2 = (uint32_t)(c + 1) << shift; for (j = c1; j < c2; j++) { WT_ASSERT(session, code2symbol[j] == 0); - code2symbol[j] = i; + code2symbol[j] = (uint8_t)i; } } } @@ -694,7 +694,7 @@ __wt_huffman_encode(WT_SESSION_IMPL *session, void *huffman_arg, * used in the last byte, unless they're 0, in which case there are 8 * bits used in the last byte. */ - padding_info = (bitpos % 8) << (8 - WT_HUFFMAN_HEADER); + padding_info = (uint8_t)((bitpos % 8) << (8 - WT_HUFFMAN_HEADER)); ((uint8_t *)tmp->mem)[0] |= padding_info; /* Copy result of exact known size into caller's buffer. */ @@ -808,11 +808,12 @@ __wt_huffman_decode(WT_SESSION_IMPL *session, void *huffman_arg, valid += 8; from_bytes--; } - pattern = valid >= max ? /* short patterns near end */ - (bits >> (valid - max)) : (bits << (max - valid)); + pattern = (uint16_t) + (valid >= max ? /* short patterns near end */ + (bits >> (valid - max)) : (bits << (max - valid))); symbol = huffman->code2symbol[pattern & mask]; len = huffman->codes[symbol].length; - valid -= len; + valid -= (uint8_t)len; /* * from_len_bits is the total number of input bits, reduced by |