Pseudo-random numbers/Splitmix64: Difference between revisions
Added Sidef
m (→{{header|Perl}}: made splitmix64 a real class and added the "next_float" method) |
(Added Sidef) |
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Line 731:
3: 19,978
4: 20,030
</pre>
=={{header|Sidef}}==
{{trans|Perl}}
<lang ruby>class Splitmix64(state) {
define (
mask64 = (2**64 - 1)
)
method next_int {
var n = (state = ((state + 0x9e3779b97f4a7c15) & mask64))
n = ((n ^ (n >> 30)) * 0xbf58476d1ce4e5b9 & mask64)
n = ((n ^ (n >> 27)) * 0x94d049bb133111eb & mask64)
(n ^ (n >> 31)) & mask64
}
method next_float {
self.next_int / (mask64+1)
}
}
say 'Seed: 1234567, first 5 values:'
var rng = Splitmix64(1234567)
5.of { rng.next_int.say }
say "\nSeed: 987654321, values histogram:"
var rng = Splitmix64(987654321)
var histogram = Bag(1e5.of { floor(5*rng.next_float) }...)
histogram.pairs.sort.each { .join(": ").say }</lang>
{{out}}
<pre>
Seed: 1234567, first 5 values:
6457827717110365317
3203168211198807973
9817491932198370423
4593380528125082431
16408922859458223821
Seed: 987654321, values histogram:
0: 20027
1: 19892
2: 20073
3: 19978
4: 20030
</pre>
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