Pseudo-random numbers/Xorshift star: Difference between revisions
Pseudo-random numbers/Xorshift star (view source)
Revision as of 18:18, 24 January 2021
, 3 years ago→{{header|Ruby}}: addes Ruby sample
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=={{header|Ruby}}==
Using Ruby 3.0 end-les method def:
<lang ruby>class Xorshift_star
MASK64 = (1 << 64) - 1
MASK32 = (1 << 32) - 1
def initialize(seed = 0) = @state = seed & MASK64
def next_int
x = @state
x = x ^ (x >> 12)
x = (x ^ (x << 25)) & MASK64
x = x ^ (x >> 27)
@state = x
(((x * 0x2545F4914F6CDD1D) & MASK64) >> 32) & MASK32
end
def next_float = next_int.fdiv((1 << 32))
end
random_gen = Xorshift_star.new(1234567)
5.times{ puts random_gen.next_int}
random_gen = Xorshift_star.new(987654321)
tally = Hash.new(0)
100_000.times{ tally[(random_gen.next_float*5).floor] += 1 }
puts tally.sort.map{|ar| ar.join(": ") }</lang>
=={{header|Sidef}}==
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