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/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 * @flow strict
 */

'use strict';

/**
 * Unrolls an array comparison specially for matrices. Prioritizes
 * checking of indices that are most likely to change so that the comparison
 * bails as early as possible.
 *
 * @param {MatrixMath.Matrix} one First matrix.
 * @param {MatrixMath.Matrix} two Second matrix.
 * @return {boolean} Whether or not the two matrices differ.
 */
const matricesDiffer = function (
  one: ?Array<number>,
  two: ?Array<number>,
): boolean {
  if (one === two) {
    return false;
  }
  return (
    !one ||
    !two ||
    one[12] !== two[12] ||
    one[13] !== two[13] ||
    one[14] !== two[14] ||
    one[5] !== two[5] ||
    one[10] !== two[10] ||
    one[0] !== two[0] ||
    one[1] !== two[1] ||
    one[2] !== two[2] ||
    one[3] !== two[3] ||
    one[4] !== two[4] ||
    one[6] !== two[6] ||
    one[7] !== two[7] ||
    one[8] !== two[8] ||
    one[9] !== two[9] ||
    one[11] !== two[11] ||
    one[15] !== two[15]
  );
};

module.exports = matricesDiffer;

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Name	Size	Perms	Modified	Actions
deepDiffer.js	2.76 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
insetsDiffer.js	746 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
matricesDiffer.js	1.17 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
pointsDiffer.js	552 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
sizesDiffer.js	675 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive

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