Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/src/vs/base/common/numbers.ts

@@ -0,0 +1,36 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+export function clamp(value: number, min: number, max: number): number {
+	return Math.min(Math.max(value, min), max);
+}
+
+export function rot(index: number, modulo: number): number {
+	return (modulo + (index % modulo)) % modulo;
+}
+
+export class Counter {
+	private _next = 0;
+
+	getNext(): number {
+		return this._next++;
+	}
+}
+
+export class MovingAverage {
+
+	private _n = 1;
+	private _val = 0;
+
+	update(value: number): this {
+		this._val = this._val + (value - this._val) / this._n;
+		this._n += 1;
+		return this;
+	}
+
+	get value(): number {
+		return this._val;
+	}
+}