26 lines
440 B
JavaScript
26 lines
440 B
JavaScript
const isBigEndian = (new Uint8Array(new Uint32Array([0x12345678]).buffer)[0] === 0x12);
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const swap = (b, n, m) => {
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let i = b[n];
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b[n] = b[m];
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b[m] = i;
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};
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const swap32 = array => {
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const len = array.length;
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for (let i = 0; i < len; i += 4) {
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swap(array, i, i + 3);
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swap(array, i + 1, i + 2);
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}
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};
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const swap32LE = array => {
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if (isBigEndian) {
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swap32(array);
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}
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};
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module.exports = {
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swap32LE: swap32LE
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};
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