11 lines
318 B
Go
11 lines
318 B
Go
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package gen
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import "math/rand"
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// Generate a random uint64 with an even distribution of bits.Len64()
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func RandBiasedUint64() uint64 {
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// The shift-right by up to 64 (shifting it to 0) makes up for randomness
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// lost by setting the high bit.
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return (rand.Uint64() | 0x8000000000000000) >> rand.Int31n(65)
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}
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