{"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\/fr\/blog\/news\/novaya-versiya-vstraivaemogo-javascript-dvizhka-ot-osnovatelya-qemu-i-ffmpeg","title":{"rendered":"Nouvelle version du moteur JavaScript embarqu\u00e9 de Fabrice Bellard, le fondateur de QEMU et FFmpeg","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Le math\u00e9maticien fran\u00e7ais Fabrice Bellard, \u00e0 l'origine des projets QEMU et FFmpeg, a publi\u00e9 une mise \u00e0 jour de son moteur JavaScript compact et int\u00e9gr\u00e9. QuickJS<\/a><\/noindex>. Le moteur prend en charge la sp\u00e9cification ES2019 et des extensions math\u00e9matiques suppl\u00e9mentaires, telles que les types BigInt et BigFloat. En termes de performances, QuickJS est nettement les alternatives existantes, par exemple, dans le test<\/a><\/noindex> meilleur que ses homologues (de 35%,<\/a><\/noindex> DukTape de plus de deux fois,<\/a><\/noindex> JerryScript de trois fois, et<\/a><\/noindex> MuJS de sept fois.<\/a><\/noindex> de sept fois). Le projet propose une biblioth\u00e8que pour int\u00e9grer le moteur, un interpr\u00e9teur qjs pour ex\u00e9cuter du code JavaScript \u00e0 partir de la ligne de commande et un compilateur qjsc pour g\u00e9n\u00e9rer des fichiers ex\u00e9cutables autonomes. Le code est \u00e9crit en C et est distribu\u00e9<\/a><\/noindex> sous licence MIT. Vous pouvez en savoir plus sur le projet dans le document annon\u00e7ant la premi\u00e8re version.<\/a><\/noindex>.<\/p>\n

La nouvelle version inclut un support exp\u00e9rimental pour le type BigDecimal<\/a><\/noindex>, permettant de manipuler des nombres d\u00e9cimaux avec une pr\u00e9cision arbitraire (analogue \u00e0 BigInt pour les nombres en base 10). L'impl\u00e9mentation de la surcharge des op\u00e9rateurs a \u00e9t\u00e9 mise \u00e0 jour. Des des exemples<\/a><\/noindex> programmes pour le calcul efficace du nombre Pi avec une pr\u00e9cision allant jusqu'\u00e0 un milliard de chiffres apr\u00e8s la virgule ont \u00e9t\u00e9 ajout\u00e9s (en tant que math\u00e9maticien, Fabrice Bellard est connu comme le cr\u00e9ateur de la formule la plus rapide pour calculer le nombre Pi).<\/p>\n

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

Source : 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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