source: trip-planner-front/node_modules/hdr-histogram-js/dist/PackedHistogram.d.ts@ 84d0fbb

Last change on this file since 84d0fbb was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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[6a3a178]1import JsHistogram from "./JsHistogram";
2import { PackedArray } from "./packedarray/PackedArray";
3/**
4 * <h3>A High Dynamic Range (HDR) Histogram that uses a packed internal representation</h3>
5 * <p>
6 * {@link PackedHistogram} supports the recording and analyzing sampled data value counts across a configurable
7 * integer value range with configurable value precision within the range. Value precision is expressed as the
8 * number of significant digits in the value recording, and provides control over value quantization behavior
9 * across the value range and the subsequent value resolution at any given level.
10 * <p>
11 * {@link PackedHistogram} tracks value counts in a packed internal representation optimized
12 * for typical histogram recoded values are sparse in the value range and tend to be incremented in small unit counts.
13 * This packed representation tends to require significantly smaller amounts of stoarge when compared to unpacked
14 * representations, but can incur additional recording cost due to resizing and repacking operations that may
15 * occur as previously unrecorded values are encountered.
16 * <p>
17 * For example, a {@link PackedHistogram} could be configured to track the counts of observed integer values between 0 and
18 * 3,600,000,000,000 while maintaining a value precision of 3 significant digits across that range. Value quantization
19 * within the range will thus be no larger than 1/1,000th (or 0.1%) of any value. This example Histogram could
20 * be used to track and analyze the counts of observed response times ranging between 1 nanosecond and 1 hour
21 * in magnitude, while maintaining a value resolution of 1 microsecond up to 1 millisecond, a resolution of
22 * 1 millisecond (or better) up to one second, and a resolution of 1 second (or better) up to 1,000 seconds. At its
23 * maximum tracked value (1 hour), it would still maintain a resolution of 3.6 seconds (or better).
24 * <p>
25 * Auto-resizing: When constructed with no specified value range range (or when auto-resize is turned on with {@link
26 * Histogram#setAutoResize}) a {@link PackedHistogram} will auto-resize its dynamic range to include recorded values as
27 * they are encountered. Note that recording calls that cause auto-resizing may take longer to execute, as resizing
28 * incurs allocation and copying of internal data structures.
29 * <p>
30 */
31declare class PackedHistogram extends JsHistogram {
32 packedCounts: PackedArray;
33 constructor(lowestDiscernibleValue: number, highestTrackableValue: number, numberOfSignificantValueDigits: number);
34 clearCounts(): void;
35 incrementCountAtIndex(index: number): void;
36 addToCountAtIndex(index: number, value: number): void;
37 setCountAtIndex(index: number, value: number): void;
38 resize(newHighestTrackableValue: number): void;
39 getCountAtIndex(index: number): number;
40 protected _getEstimatedFootprintInBytes(): number;
41 copyCorrectedForCoordinatedOmission(expectedIntervalBetweenValueSamples: number): PackedHistogram;
42 toString(): string;
43}
44export default PackedHistogram;
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