forked from TrueCloudLab/frostfs-node
26 lines
545 B
Go
26 lines
545 B
Go
package auditor
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import (
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"github.com/nspcc-dev/neofs-node/pkg/util/rand"
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)
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// returns random uint64 number [0; n) outside exclude map.
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// exclude must contain no more than n-1 elements [0; n)
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func nextRandUint64(n uint64, exclude map[uint64]struct{}) uint64 {
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ln := uint64(len(exclude))
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ind := randUint64(n - ln)
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for i := uint64(0); ; i++ {
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if i >= ind {
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if _, ok := exclude[i]; !ok {
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return i
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}
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}
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}
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}
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// returns random uint64 number [0, n).
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func randUint64(n uint64) uint64 {
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return rand.Uint64(rand.New(), int64(n))
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}
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