### `prng_xor128`

xor128, a pure xor-shift generator by George Marsaglia.

- **Period:** `2^128-1`.
- **Reported to fail:** MatrixRank and LinearComp.

```javascript
import {prng_xor128} from 'esm-seedrandom'
import {prng_xor128} from 'esm-seedrandom/esm/index.js'
import prng_xor128 from 'esm-seedrandom/esm/index.js'

// from a browser or deno environment
import {prng_xor128} from '//cdn.jsdelivr.net/npm/esm-seedrandom/esm/index.min.js'
import {prng_xor128} from '//cdn.jsdelivr.net/npm/esm-seedrandom/esm/xor128.min.js'


let myrng = prng_xor128('an example seed string', {state: true})

console.log(myrng()); // between 0.0 and 1.0 as f32
console.log(myrng.quick()); // between 0.0 and 1.0 as f32
console.log(myrng.double()); // between 0.0 and 1.0 as f64
console.log(myrng.int32()); // between -2147483648 and 2147483647


let mystate = myrng.state()
console.log(mystate); // a JSON-serializable object capturing the internal PRNG state

let dup_myrng = prng_xor128(null, {state: mystate})
```