Edit File: adler32.js
'use strict'; // Note: adler32 takes 12% for level 0 and 2% for level 6. // It doesn't worth to make additional optimizationa as in original. // Small size is preferable. function adler32(adler, buf, len, pos) { var s1 = (adler & 0xffff) |0, s2 = ((adler >>> 16) & 0xffff) |0, n = 0; while (len !== 0) { // Set limit ~ twice less than 5552, to keep // s2 in 31-bits, because we force signed ints. // in other case %= will fail. n = len > 2000 ? 2000 : len; len -= n; do { s1 = (s1 + buf[pos++]) |0; s2 = (s2 + s1) |0; } while (--n); s1 %= 65521; s2 %= 65521; } return (s1 | (s2 << 16)) |0; } module.exports = adler32;
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