{"id":55548,"date":"2020-01-23T00:00:00","date_gmt":"2020-01-22T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/novaya-versiya-vstraivaemogo-javascript-dvizhka-ot-osnovatelya-qemu-i-ffmpeg"},"modified":"2020-02-18T14:03:40","modified_gmt":"2020-02-18T11:03:40","slug":"novaya-versiya-vstraivaemogo-javascript-dvizhka-ot-osnovatelya-qemu-i-ffmpeg","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/news\/novaya-versiya-vstraivaemogo-javascript-dvizhka-ot-osnovatelya-qemu-i-ffmpeg","title":{"rendered":"Neue Version des eingebetteten JavaScript-Engines vom Gr\u00fcnder von QEMU und FFmpeg","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Der franz\u00f6sische Mathematiker Fabrice Bellard, der einst die Projekte QEMU und FFmpeg ins Leben rief, hat ein Update seines kompakten Embedded-JavaScript-Engines ver\u00f6ffentlicht. QuickJS<\/a><\/noindex>Die Engine unterst\u00fctzt die ES2019-Spezifikation sowie zus\u00e4tzliche mathematische Erweiterungen wie die Datentypen BigInt und BigFloat. In Bezug auf die Leistung \u00fcbertrifft QuickJS deutlich vergleichbare Engines, beispielsweise bei dem Test<\/a><\/noindex> verf\u00fcgbare Alternativen (um 35%,<\/a><\/noindex> DukTape mehr als das Doppelte,<\/a><\/noindex> JerryScript um das Dreifache und<\/a><\/noindex> MuJS um das Siebenfache.<\/a><\/noindex> um das Siebenfache). Das Projekt umfasst eine Bibliothek zur Einbettung der Engine, den Interpreter qjs zum Ausf\u00fchren von JavaScript-Code aus der Kommandozeile und den Compiler qjsc zur Generierung von autarken ausf\u00fchrbaren Dateien. Der Code ist in C geschrieben und wird verbreitet<\/a><\/noindex> unterliegt der MIT-Lizenz. Weitere Informationen zum Projekt finden Sie im Text der Ank\u00fcndigung der ersten Version.<\/a><\/noindex>.<\/p>\n

In der neuen Version wurde experimentelle Unterst\u00fctzung f\u00fcr den Typ BigDecimal<\/a><\/noindex>, der die Manipulation von Dezimalzahlen mit beliebiger Genauigkeit erm\u00f6glicht (ein Pendant zu BigInt f\u00fcr Zahlen mit Basis 10), hinzugef\u00fcgt. Die Implementierung der Operator\u00fcberladung wurde aktualisiert. Es wurden Beispiele<\/a><\/noindex> Programme zur effizienten Berechnung von Pi mit einer Genauigkeit von bis zu einer Milliarde Nachkommastellen hinzugef\u00fcgt (als Mathematiker ist Fabrice Bellard bekannt als Sch\u00f6pfer der schnellsten Formel zur Berechnung von Pi).<\/p>\n

<\/a><\/noindex><\/p>\n

Quelle: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0424\u0440\u0430\u043d\u0446\u0443\u0437\u0441\u043a\u0438\u0439 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u043a \u0424\u0430\u0431\u0440\u0438\u0441 \u0411\u0435\u043b\u043b\u0430\u0440 (Fabrice Bellard), \u043e\u0441\u043d\u043e\u0432\u0430\u0432\u0448\u0438\u0439 \u0432 \u0441\u0432\u043e\u0451 \u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0435\u043a\u0442\u044b QEMU \u0438 FFmpeg, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u0438\u043c \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u043e\u0433\u043e \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0433\u043e JavaScript-\u0434\u0432\u0438\u0436\u043a\u0430 QuickJS. \u0414\u0432\u0438\u0436\u043e\u043a \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e ES2019 \u0438 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a \u0442\u0438\u043f\u044b BigInt \u0438 BigFloat. \u041f\u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 QuickJS \u0437\u0430\u043c\u0435\u0442\u043d\u043e \u043f\u0440\u0435\u0432\u043e\u0441\u0445\u043e\u0434\u0438\u0442 \u0438\u043c\u0435\u044e\u0449\u0438\u0435\u0441\u044f \u0430\u043d\u0430\u043b\u043e\u0433\u0438 (XS \u043d\u0430 35%, DukTape \u0431\u043e\u043b\u0435\u0435 \u0447\u0435\u043c \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430, JerryScript \u0432 \u0442\u0440\u0438 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