'use strict';

var crc32_1;
var hasRequiredCrc32;

function requireCrc32 () {
	if (hasRequiredCrc32) return crc32_1;
	hasRequiredCrc32 = 1;

	// Note: we can't get significant speed boost here.
	// So write code to minimize size - no pregenerated tables
	// and array tools dependencies.

	// (C) 1995-2013 Jean-loup Gailly and Mark Adler
	// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
	//
	// This software is provided 'as-is', without any express or implied
	// warranty. In no event will the authors be held liable for any damages
	// arising from the use of this software.
	//
	// Permission is granted to anyone to use this software for any purpose,
	// including commercial applications, and to alter it and redistribute it
	// freely, subject to the following restrictions:
	//
	// 1. The origin of this software must not be misrepresented; you must not
	//   claim that you wrote the original software. If you use this software
	//   in a product, an acknowledgment in the product documentation would be
	//   appreciated but is not required.
	// 2. Altered source versions must be plainly marked as such, and must not be
	//   misrepresented as being the original software.
	// 3. This notice may not be removed or altered from any source distribution.

	// Use ordinary array, since untyped makes no boost here
	function makeTable() {
	  var c, table = [];

	  for (var n = 0; n < 256; n++) {
	    c = n;
	    for (var k = 0; k < 8; k++) {
	      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
	    }
	    table[n] = c;
	  }

	  return table;
	}

	// Create table on load. Just 255 signed longs. Not a problem.
	var crcTable = makeTable();


	function crc32(crc, buf, len, pos) {
	  var t = crcTable,
	      end = pos + len;

	  crc ^= -1;

	  for (var i = pos; i < end; i++) {
	    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
	  }

	  return (crc ^ (-1)); // >>> 0;
	}


	crc32_1 = crc32;
	return crc32_1;
}

exports.__require = requireCrc32;
