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// Copyright 2021 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package stats
import "golang.org/x/perf/benchstat"
// Mann-Whitney U test.
func UTest(old, new *Sample) (pval float64, err error) {
// Unfortunately we cannot just invoke MannWhitneyUTest from x/perf/benchstat/internal/stats,
// so we first wrap the data in Metrics.
mOld := benchstat.Metrics{
RValues: old.Xs,
}
mNew := benchstat.Metrics{
RValues: new.Xs,
}
return benchstat.UTest(&mOld, &mNew)
}
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