TmMolStar/src/mol-io/common/binary.ts

/**
 * Copyright (c) 2017-2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 * @author David Sehnal <david.sehnal@gmail.com>
 */

export const IsNativeEndianLittle = new Uint16Array(new Uint8Array([0x12, 0x34]).buffer)[0] === 0x3412;

export function flipByteOrder(data: Uint8Array, bytes: number) {
    let buffer = new ArrayBuffer(data.length);
    let ret = new Uint8Array(buffer);
    for (let i = 0, n = data.length; i < n; i += bytes) {
        for (let j = 0; j < bytes; j++) {
            ret[i + bytes - j - 1] = data[i + j];
        }
    }
    return buffer;
}