StackedBoxes' Random library in Go

Random number utilities in Go.

Package randsrc provides (pseudo) random number sources based on the algorithms shown in the table below. The "speed" column is as measured on my computer (Core i5-4460 @ 3.2GHz). The "notes" column is quite personal and subjective.

<tr>
    <td>Knuth LCG</td>
    <td>2.71</td>
    <td>No more than 2<sup>64</sup></td>
    <td>8</td>
    <td>An LCG with constants suggested by Don Knuth (or so says Wikipedia). Low quality, despite having "Knuth" in the name.</td>
    <td><a href=https://en.wikipedia.org/wiki/Linear_congruential_generator>WP</a></td>
</tr>

<tr>
    <td>MT19937-64</td>
    <td>15.2</td>
    <td>2<sup>19937</sup>−1</td>
    <td>2504</td>
    <td>Good quality. Very popular. Ridiculously long period. Large state.</td>
    <td><a href="https://en.wikipedia.org/wiki/Mersenne_Twister">WP</a>, <a href="http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html">Official</a></td>
</tr>

<tr>
    <td>SplitMix64</td>
    <td>3.28</td>
    <td>2<sup>64</sup></td>
    <td>8</td>
    <td>Not bad. Good choice for seeding other RNGs from a single 64-bit number.</td>
    <td><a href="http://xoroshiro.di.unimi.it">Link</a></td>
</tr>

<tr>
    <td>Xoroshiro128+</td>
    <td>4.43</td>
    <td>2<sup>128</sup>−1</td>
    <td>16</td>
    <td>A very good one. "Xoroshiro" stands for "XOr/ROtate/SHIft/ROtate".</td>
    <td><a href="http://xoroshiro.di.unimi.it/">Official</a></td>
</tr>

<tr>
    <td>Xorshift</td>
    <td>3.49</td>
    <td>2<sup>64</sup>−1</td>
    <td>8</td>
    <td>A good one. Marsaglia was the man.</td>
    <td><a href="https://en.wikipedia.org/wiki/Xorshift">WP</a>, <a href="http://www.jstatsoft.org/v08/i14/paper">Paper</a></td>
</tr>

Name	Speed (ns/op)	Period	Size (bytes)	Notes	References

Package randutil provides assorted utilities for working with random numbers. Currently, it contains only GoodSeed, a function providing a good value to use as a random seed.

License

All code here is under the MIT License.