/**
 * @license
 * Copyright 2019 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */
import { BenchmarkResult } from './types.js';
export interface ConfidenceInterval {
    low: number;
    high: number;
}
export interface SummaryStats {
    size: number;
    mean: number;
    meanCI: ConfidenceInterval;
    variance: number;
    standardDeviation: number;
    relativeStandardDeviation: number;
}
export interface ResultStats {
    result: BenchmarkResult;
    stats: SummaryStats;
}
export interface ResultStatsWithDifferences extends ResultStats {
    differences: Array<Difference | null>;
}
export interface Difference {
    absolute: ConfidenceInterval;
    relative: ConfidenceInterval;
}
export declare function summaryStats(data: number[]): SummaryStats;
/**
 * Return whether the given confidence interval contains a value.
 */
export declare function intervalContains(interval: ConfidenceInterval, value: number): boolean;
export interface AutoSampleConditions {
    absolute: number[];
    relative: number[];
}
/**
 * Return whether all difference confidence intervals are unambiguously located
 * on one side or the other of all given auto sample conditions.
 *
 * For example, given the conditions 0 and 1:
 *
 *    <--->                   true
 *        <--->               false
 *            <--->           true
 *                <--->       false
 *                    <--->   true
 *        <----------->       false
 *
 *  |-------|-------|-------| ms difference
 * -1       0       1       2
 */
export declare function autoSampleConditionsResolved(resultStats: ResultStatsWithDifferences[], conditions: AutoSampleConditions): boolean;
/**
 * Given an array of results, return a new array of results where each result
 * has additional statistics describing how it compares to each other result.
 */
export declare function computeDifferences(stats: ResultStats[]): ResultStatsWithDifferences[];
export declare function computeDifference(a: SummaryStats, b: SummaryStats): Difference;