"use strict";
var ceil = Math.ceil,
random = Math.random;
var BITS_PER_BYTE = 8;
var endianByteNum = function () {
var buf32 = new Uint32Array(1);
var buf8 = new Uint8Array(buf32.buffer);
buf32[0] = 0xff;
return buf8[0] === 0xff ? [2, 3, 4, 5, 6, 7] : [0, 1, 2, 3, 6, 7];
}();
var prngBytes = function prngBytes(count) {
var BYTES_USED_PER_RANDOM_CALL = 6;
var randCount = ceil(count / BYTES_USED_PER_RANDOM_CALL);
var buffer = new ArrayBuffer(count);
var dataView = new DataView(new ArrayBuffer(BITS_PER_BYTE));
for (var rNum = 0; rNum < randCount; rNum += 1) {
dataView.setFloat64(0, random());
for (var n = 0; n < BYTES_USED_PER_RANDOM_CALL; n += 1) {
var fByteNum = endianByteNum[n];
var bByteNum = rNum * BYTES_USED_PER_RANDOM_CALL + n;
if (bByteNum < count) {
buffer[bByteNum] = dataView.getUint8(fByteNum);
}
}
}
return buffer;
};
module.exports = {
prngBytes: prngBytes
};