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cleared unnecessary var casts

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This commit is contained in:
Vitaly Puzrin 2014-02-18 07:03:13 +04:00
parent 1a32aea787
commit fcd6db56b7
2 changed files with 9 additions and 15 deletions
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12
lib/zlib/deflate.js
View file

@ -533,8 +533,7 @@ function deflate_fast(s, flush) {
if (s.lookahead >= MIN_MATCH) {
/*** INSERT_STRING(s, s.strstart, hash_head); ***/
s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
hash_head = (s.head[s.ins_h] & 0xffff);
s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
s.head[s.ins_h] = s.strstart;
/***/
}
@ -568,8 +567,7 @@ function deflate_fast(s, flush) {
s.strstart++;
/*** INSERT_STRING(s, s.strstart, hash_head); ***/
s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
hash_head = (s.head[s.ins_h] & 0xffff);
s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
s.head[s.ins_h] = s.strstart;
/***/
/* strstart never exceeds WSIZE-MAX_MATCH, so there are
@ -664,8 +662,7 @@ function deflate_slow(s, flush) {
if (s.lookahead >= MIN_MATCH) {
/*** INSERT_STRING(s, s.strstart, hash_head); ***/
s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
hash_head = (s.head[s.ins_h] & 0xffff);
s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
s.head[s.ins_h] = s.strstart;
/***/
}
@ -718,8 +715,7 @@ function deflate_slow(s, flush) {
if (++s.strstart <= max_insert) {
/*** INSERT_STRING(s, s.strstart, hash_head); ***/
s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
hash_head = (s.head[s.ins_h] & 0xffff);
s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
s.head[s.ins_h] = s.strstart;
/***/
}

12
lib/zlib/trees.js
View file

@ -159,16 +159,14 @@ function put_short (s, w) {
* IN assertion: length <= 16 and value fits in length bits.
*/
function send_bits(s, value, length) {
var len = length, val;
if (s.bi_valid > (Buf_size - len)) {
val = value;
s.bi_buf |= (val << s.bi_valid) & 0xffff;
if (s.bi_valid > (Buf_size - length)) {
s.bi_buf |= (value << s.bi_valid) & 0xffff;
put_short(s, s.bi_buf);
s.bi_buf = val >> (Buf_size - s.bi_valid);
s.bi_valid += len - Buf_size;
s.bi_buf = value >> (Buf_size - s.bi_valid);
s.bi_valid += length - Buf_size;
} else {
s.bi_buf |= (value << s.bi_valid) & 0xffff;
s.bi_valid += len;
s.bi_valid += length;
}
}