. . . . . . "x87 - \u00C9 o nome gen\u00E9rico dado aos co-processadores Intel de ponto flutuante que funcionavam em conjunto com os processadores de dados, cada um com o seu par.Originou-se como uma extens\u00E3o da instru\u00E7\u00E3o set 8086 na forma de co-processadores de ponto flutuante opcional que trabalhou em conjunto com CPUs x86 correspondentes. Estes microchips tinham nomes terminados em \"87\". Como outras extens\u00F5es para o conjunto de instru\u00E7\u00F5es b\u00E1sicas, as instru\u00E7\u00F5es x87 n\u00E3o s\u00E3o estritamente necess\u00E1rias para a constru\u00E7\u00E3o de programas de trabalho, mas para fornecer hardware e microc\u00F3digo em implementa\u00E7\u00F5es de tarefas comuns num\u00E9rica, permitindo que estas tarefas sejam executadas muito mais rapidamente que as rotinas de c\u00F3digo normais.O conjunto de instru\u00E7\u00F5es x87 inclui instru\u00E7\u00F5es para opera\u00E7\u00F5es b\u00E1sicas de ponto flutuante, como adi\u00E7\u00E3o, subtra\u00E7\u00E3o e compara\u00E7\u00E3o, mas tamb\u00E9m para mais complexas opera\u00E7\u00F5es num\u00E9ricas, como o c\u00E1lculo da fun\u00E7\u00E3o tangente e seu inverso. A maioria dos processadores x86 desde o Intel 80486 tiveram estas instru\u00E7\u00F5es x87 implementadas na CPU principal, mas o termo ainda \u00E9 usado para se referir a essa parte do conjunto de instru\u00E7\u00F5es. Antes das instru\u00E7\u00F5es x87 serem padr\u00E3o em PCs, os compiladores ou programadores tinham de usar uma biblioteca bastante lenta para fazer chamadas ou executar opera\u00E7\u00F5es de ponto flutuante, um m\u00E9todo que ainda \u00E9 comum em (baixo custo) sistemas embarcados."@pt . . . . . . . "x87\uC740 \uBD80\uB3D9\uC18C\uC218\uC810 \uC5F0\uC0B0\uC5D0 \uAD00\uB828\uB41C X86 \uC544\uD0A4\uD14D\uCC98 \uBA85\uB839\uC5B4 \uC9D1\uD569\uC744 \uC758\uBBF8\uD55C\uB2E4. NPX(Numeric Processor eXtension)\uB77C\uACE0\uB3C4 \uD55C\uB2E4.x87\uC740 \uCD08\uAE30\uC5D0\uB294 x86 \uD504\uB85C\uC138\uC11C\uC5D0 \uB300\uC751\uD558\uB294 \uCF54\uD504\uB85C\uC138\uC11C \uD615\uD0DC\uB85C \uC9C0\uC6D0\uB418\uC5C8\uC73C\uBA70, 80486 \uBAA8\uB378\uC5D0\uC11C\uBD80\uD130 \uCF54\uD504\uB85C\uC138\uC11C \uB300\uC2E0 CPU \uC790\uCCB4\uC5D0\uC11C x87 \uBA85\uB839\uC5B4\uB97C \uC9C0\uC6D0\uD558\uAE30 \uC2DC\uC791\uD588\uB2E4. x87\uC5D0\uC11C\uB294 \uBD80\uB3D9\uC18C\uC218\uC810 \uD45C\uC900 IEEE 754\uC758 32\uBE44\uD2B8 \uB2E8\uC815\uBC00\uB3C4, 64\uBE44\uD2B8 \uBC30\uC815\uBC00\uB3C4, 80\uBE44\uD2B8 \uD655\uC7A5 \uBC30\uC815\uBC00\uB3C4\uB97C \uC9C0\uC6D0\uD55C\uB2E4. \uAE30\uBCF8\uC801\uC73C\uB85C\uB294 \uB0B4\uBD80\uC758 \uBAA8\uB4E0 \uACC4\uC0B0\uC740 80\uBE44\uD2B8\uB85C \uC774\uB8E8\uC5B4\uC9C0\uAE30 \uB54C\uBB38\uC5D0, \uB2E8\uC815\uBC00\uB3C4/\uBC30\uC815\uBC00\uB3C4 \uACC4\uC0B0\uC774 \uC2E4\uC81C IEEE 754 \uACB0\uACFC\uC640\uB294 \uB2EC\uB77C\uC9C8 \uC218 \uC788\uB2E4. \uC774\uB97C \uBC29\uC9C0\uD558\uAE30 \uC704\uD558\uC5EC \uB0B4\uBD80 \uACC4\uC0B0 \uBC29\uC2DD\uC744 \uBCC0\uACBD\uD558\uB294 \uAC83\uB3C4 \uAC00\uB2A5\uD558\uB2E4."@ko . . . . . . . . . . . . "X87"@fr . . . . . . . . . . . "X87"@uk . "x87 \u2014 \u044D\u0442\u043E \u0441\u043F\u0435\u0446\u0438\u0430\u043B\u044C\u043D\u044B\u0439 \u043D\u0430\u0431\u043E\u0440 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0439 \u0434\u043B\u044F \u0440\u0430\u0431\u043E\u0442\u044B \u0441 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u0435\u0441\u043A\u0438\u043C\u0438 \u0432\u044B\u0447\u0438\u0441\u043B\u0435\u043D\u0438\u044F\u043C\u0438, \u044F\u0432\u043B\u044F\u044E\u0449\u0438\u0439\u0441\u044F \u043F\u043E\u0434\u043C\u043D\u043E\u0436\u0435\u0441\u0442\u0432\u043E\u043C \u0430\u0440\u0445\u0438\u0442\u0435\u043A\u0442\u0443\u0440\u044B \u043F\u0440\u043E\u0446\u0435\u0441\u0441\u043E\u0440\u043E\u0432 x86. \u0422\u0430\u043A\u043E\u0435 \u043D\u0430\u0437\u0432\u0430\u043D\u0438\u0435 \u043E\u043D \u043F\u043E\u043B\u0443\u0447\u0438\u043B, \u043F\u043E\u0442\u043E\u043C\u0443 \u0447\u0442\u043E \u043F\u0435\u0440\u0432\u043E\u043D\u0430\u0447\u0430\u043B\u044C\u043D\u044B\u0435 \u043E\u0442\u0434\u0435\u043B\u044C\u043D\u044B\u0435 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u0435\u0441\u043A\u0438\u0435 \u0441\u043E\u043F\u0440\u043E\u0446\u0435\u0441\u0441\u043E\u0440\u044B \u0438\u043C\u0435\u043B\u0438 \u043D\u0430\u0437\u0432\u0430\u043D\u0438\u044F, \u0437\u0430\u043A\u0430\u043D\u0447\u0438\u0432\u0430\u044E\u0449\u0438\u0435\u0441\u044F \u043D\u0430 87. \u041A\u0430\u043A \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043D\u0438\u044F \u0431\u0430\u0437\u043E\u0432\u043E\u0433\u043E \u043D\u0430\u0431\u043E\u0440\u0430 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0439 \u043F\u0440\u043E\u0446\u0435\u0441\u0441\u043E\u0440\u0430, \u044D\u0442\u0438 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0438 \u043D\u0435 \u044F\u0432\u043B\u044F\u044E\u0442\u0441\u044F \u0441\u0442\u0440\u043E\u0433\u043E \u043D\u0435\u043E\u0431\u0445\u043E\u0434\u0438\u043C\u044B\u043C\u0438 \u0434\u043B\u044F \u043F\u043E\u0441\u0442\u0440\u043E\u0435\u043D\u0438\u044F \u0440\u0430\u0431\u043E\u0447\u0435\u0439 \u043F\u0440\u043E\u0433\u0440\u0430\u043C\u043C\u044B, \u043D\u043E \u0431\u0443\u0434\u0443\u0447\u0438 \u0430\u043F\u043F\u0430\u0440\u0430\u0442\u043D\u043E \u0440\u0435\u0430\u043B\u0438\u0437\u043E\u0432\u0430\u043D\u043D\u044B\u043C\u0438, \u043E\u0431\u0449\u0438\u0435 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u0435\u0441\u043A\u0438\u0435 \u0437\u0430\u0434\u0430\u0447\u0438 \u043E\u043D\u0438 \u043F\u043E\u0437\u0432\u043E\u043B\u044F\u044E\u0442 \u0432\u044B\u043F\u043E\u043B\u043D\u044F\u0442\u044C \u0433\u043E\u0440\u0430\u0437\u0434\u043E \u0431\u044B\u0441\u0442\u0440\u0435\u0435. \u041D\u0430\u043F\u0440\u0438\u043C\u0435\u0440, \u0432 \u043D\u0430\u0431\u043E\u0440\u0435 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0439 x87 \u043F\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044E\u0442 \u043A\u043E\u043C\u0430\u043D\u0434\u044B \u0434\u043B\u044F \u0440\u0430\u0441\u0447\u0451\u0442\u0430 \u0437\u043D\u0430\u0447\u0435\u043D\u0438\u0439 \u0441\u0438\u043D\u0443\u0441\u0430 \u0438\u043B\u0438 \u043A\u043E\u0441\u0438\u043D\u0443\u0441\u0430."@ru . "x87 (auch numeric processor extension, NPX) bezeichnet eine Untermenge des Befehlssatzes der x86-Architektur f\u00FCr Gleitkommaberechnungen. Es ist die \u00E4lteste Befehlssatzerweiterung f\u00FCr diese Architektur. Ihre Befehle sind nicht notwendig, um funktionierende Programme zu erzeugen, aber sie bieten Hardwareimplementierungen f\u00FCr h\u00E4ufige numerische Aufgaben, die damit wesentlich (10\u00D7 bis 30\u00D7) schneller erledigt werden. Bevor die x87-Befehle von den Prozessoren verarbeitet werden konnten, mussten Compiler oder Programmierer langsame Software-Bibliotheksprozeduren aufrufen, um derartige Gleitkommaoperationen durchzuf\u00FChren. Diese Vorgehensweise ist in vielen preiswerten eingebetteten Systemen noch immer h\u00E4ufig notwendig. Alternativ wird in Systemen, die keine Gleitkommaeinheit aufweisen, Festkommaar"@de . . . . . . . . "x87\u306Fx86\u30A2\u30FC\u30AD\u30C6\u30AF\u30C1\u30E3\u30FC\u547D\u4EE4\u30BB\u30C3\u30C8\u306E\u3046\u3061\u6D6E\u52D5\u5C0F\u6570\u70B9\u6570\u95A2\u4FC2\u306E\u30B5\u30D6\u30BB\u30C3\u30C8\u306E\u3053\u3068\u3067\u3042\u308B\u3002\u3082\u3068\u3082\u3068\u306Fx86\u7CFBCPU\u3068\u5354\u8ABF\u3057\u3066\u52D5\u4F5C\u3059\u308B\u30AA\u30D7\u30B7\u30E7\u30F3\u306E\u6D6E\u52D5\u5C0F\u6570\u70B9\u6570\u30B3\u30D7\u30ED\u30BB\u30C3\u30B5 (FPU) \u3067\u30B5\u30DD\u30FC\u30C8\u3055\u308C\u308B\u30018086\u547D\u4EE4\u30BB\u30C3\u30C8\u306E\u62E1\u5F35\u6A5F\u80FD\u3067\u3042\u3063\u305F\u3002\u3053\u308C\u3089\u306E\u30DE\u30A4\u30AF\u30ED\u30C1\u30C3\u30D7\u306F\u578B\u756A\u306E\u672B\u5C3E\u304C\"87\"\u3068\u306A\u3063\u3066\u3044\u305F\u3002\u3053\u308C\u306FNPX (Numeric Processor Extension) \u3068\u3057\u3066\u3082\u77E5\u3089\u308C\u308B\u3002\u57FA\u672C\u547D\u4EE4\u30BB\u30C3\u30C8\u306B\u5BFE\u3059\u308B\u4ED6\u306E\u62E1\u5F35\u3068\u540C\u69D8\u3001x87\u547D\u4EE4\u306F\u52D5\u4F5C\u3059\u308B\u30D7\u30ED\u30B0\u30E9\u30E0\u3092\u69CB\u7BC9\u3059\u308B\u306E\u306B\u5FC5\u9808\u306E\u3082\u306E\u3067\u306F\u306A\u3044\u304C\u3001\u983B\u51FA\u3059\u308B\u6570\u5024\u51E6\u7406\u306E\u30CF\u30FC\u30C9\u30A6\u30A7\u30A2\u304A\u3088\u3073\u30DE\u30A4\u30AF\u30ED\u30B3\u30FC\u30C9\u5B9F\u88C5\u306B\u3088\u308A\u3001\u3053\u308C\u3089\u306E\u51E6\u7406\u3092\u5BFE\u5FDC\u3059\u308B\u6A5F\u68B0\u8A9E\u30EB\u30FC\u30C1\u30F3\u304C\u884C\u3046\u3088\u308A\u3082\u306F\u308B\u304B\u306B\u9AD8\u901F\u306B\u884C\u3046\u3053\u3068\u304C\u3067\u304D\u308B\u3002x87\u547D\u4EE4\u30BB\u30C3\u30C8\u306F\u52A0\u7B97\u3001\u6E1B\u7B97\u3001\u6BD4\u8F03\u306E\u57FA\u672C\u7684\u306A\u6D6E\u52D5\u5C0F\u6570\u70B9\u6F14\u7B97\u3060\u3051\u3067\u306A\u304F\u3001\u30BF\u30F3\u30B8\u30A7\u30F3\u30C8\u95A2\u6570\u3084\u305D\u306E\u9006\u95A2\u6570\u306A\u3069\u306E\u8D85\u8D8A\u95A2\u6570\u306E\u6570\u5024\u6F14\u7B97\u3092\u542B\u3080\u3002 Intel 80486\u4EE5\u964D\u306E\u307B\u3068\u3093\u3069\u306Ex86\u30D7\u30ED\u30BB\u30C3\u30B5\u30FC\u306F\u3053\u308C\u3089\u306Ex87\u547D\u4EE4\u3092\u30E1\u30A4\u30F3CPU\u306B\u542B\u3093\u3067\u3044\u308B\u304C\u3001\u3053\u306E\u7528\u8A9E\u306F\u4ECA\u3067\u3082\u547D\u4EE4\u30BB\u30C3\u30C8\u306E\u4E00\u90E8\u3092\u6307\u3059\u306E\u306B\u7528\u3044\u3089\u308C\u308B\u3053\u3068\u304C\u3042\u308B\u3002PC\u306B\u304A\u3044\u3066x87\u547D\u4EE4\u304C\u6A19\u6E96\u306B\u306A\u308B\u524D\u3001\u30B3\u30F3\u30D1\u30A4\u30E9\u3084\u30D7\u30ED\u30B0\u30E9\u30DE\u306F\u6D6E\u52D5\u5C0F\u6570\u70B9\u6F14\u7B97\u3092\u5B9F\u884C\u3059\u308B\u305F\u3081\u306B\u304B\u306A\u308A\u9045\u3044\u6D6E\u52D5\u5C0F\u6570\u70B9\u6F14\u7B97\u30E9\u30A4\u30D6\u30E9\u30EA\u3092\u4F7F\u7528\u3057\u3066\u3044\u305F\u3002\u3053\u306E\u624B\u6CD5\u306F\uFF08\u4F4E\u4FA1\u683C\u306E\uFF09\u7D44\u307F\u8FBC\u307F\u30B7\u30B9\u30C6\u30E0\u3067\u306F\u4F9D\u7136\u4E00\u822C\u7684\u3067\u3042\u308B\u3002"@ja . . . . . . . . . . . "El x87 es un subconjunto de coma flotante del conjunto de instrucciones de la arquitectura x86. Se origin\u00F3 como una extensi\u00F3n del conjunto de instrucciones del 8086 en la forma de un coprocesador opcional de coma flotante que trabaj\u00F3 en paralelo con el correspondiente CPU x86. Estos microchips ten\u00EDan nombres que terminaban en \"87\" (8087, 80287, 80387). Como otras extensiones al conjunto de instrucciones b\u00E1sico, las instrucciones x87 no son estrictamente necesarias para construir programas funcionales, pero proporcionan implementaciones de hardware y microc\u00F3digo de tareas num\u00E9ricas comunes, permitiendo a estas tareas desempe\u00F1arse mucho m\u00E1s r\u00E1pido que las rutinas correspondientes en c\u00F3digo de m\u00E1quina. El conjunto de instrucciones x87 incluye instrucciones para operaciones de coma flotante b\u00E1sicas tales como adici\u00F3n, sustracci\u00F3n y comparaci\u00F3n, como tambi\u00E9n para operaciones num\u00E9ricas m\u00E1s complejas, como el c\u00E1lculo de la funci\u00F3n tangente y su inversa, por ejemplo. Desde el Intel 80486, la mayor\u00EDa de los procesadores x86 han tenido estas instrucciones x87 implementadas en el propio CPU, pero el t\u00E9rmino a veces es todav\u00EDa usado para referirse a esa parte del conjunto de instrucciones. Antes de que las instrucciones x87 fueron est\u00E1ndar en los PC, los compiladores o programadores ten\u00EDan que usar llamadas bastante lentas a bibliotecas, para realizar operaciones de coma flotante, un m\u00E9todo que a\u00FAn es com\u00FAn en sistemas empotrados (de bajo costo)."@es . . . . . . . . "X87"@pt . "Architettura x87"@it . . . . . . . . . . . . . "x87 \u2014 \u0446\u0435 \u0441\u043F\u0435\u0446\u0456\u0430\u043B\u044C\u043D\u0438\u0439 \u043D\u0430\u0431\u0456\u0440 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0439 \u0434\u043B\u044F \u0440\u043E\u0431\u043E\u0442\u0438 \u0437 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u043D\u0438\u043C\u0438 \u043E\u0431\u0447\u0438\u0441\u043B\u0435\u043D\u043D\u044F\u043C\u0438, \u0454 \u043F\u0456\u0434\u043C\u043D\u043E\u0436\u0438\u043D\u043E\u044E \u0430\u0440\u0445\u0456\u0442\u0435\u043A\u0442\u0443\u0440\u0438 \u043F\u0440\u043E\u0446\u0435\u0441\u043E\u0440\u0456\u0432 x86. \u0422\u0430\u043A\u0443 \u043D\u0430\u0437\u0432\u0443 \u0432\u0456\u043D \u043E\u0442\u0440\u0438\u043C\u0430\u0432, \u0442\u043E\u043C\u0443 \u0449\u043E \u043F\u043E\u0447\u0430\u0442\u043A\u043E\u0432\u0456 \u043E\u043A\u0440\u0435\u043C\u0456 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u043D\u0456 \u0441\u043F\u0456\u0432\u043F\u0440\u043E\u0446\u0435\u0441\u043E\u0440\u043D\u0456 \u0447\u0438\u043F\u0438 \u043C\u0430\u043B\u0438 \u043D\u0430\u0437\u0432\u0438, \u0449\u043E \u0437\u0430\u043A\u0456\u043D\u0447\u0443\u044E\u0442\u044C\u0441\u044F \u043D\u0430 87. \u042F\u043A \u0456 \u0456\u043D\u0448\u0456 \u0440\u043E\u0437\u0448\u0438\u0440\u0435\u043D\u043D\u044F \u0431\u0430\u0437\u043E\u0432\u043E\u0433\u043E \u043D\u0430\u0431\u043E\u0440\u0443 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0439 \u043F\u0440\u043E\u0446\u0435\u0441\u043E\u0440\u0430, \u0446\u0456 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0457 \u043D\u0435 \u0454 \u0441\u0442\u0440\u043E\u0433\u043E \u043D\u0435\u043E\u0431\u0445\u0456\u0434\u043D\u0438\u043C\u0438 \u0434\u043B\u044F \u043F\u043E\u0431\u0443\u0434\u043E\u0432\u0438 \u0440\u043E\u0431\u043E\u0447\u043E\u0457 \u043F\u0440\u043E\u0433\u0440\u0430\u043C\u0438, \u0430\u043B\u0435 \u0437\u0430\u0433\u0430\u043B\u044C\u043D\u0456 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u043D\u0456 \u0437\u0430\u0432\u0434\u0430\u043D\u043D\u044F \u0432\u043E\u043D\u0438 \u0434\u043E\u0437\u0432\u043E\u043B\u044F\u044E\u0442\u044C \u0432\u0438\u043A\u043E\u043D\u0443\u0432\u0430\u0442\u0438 \u043D\u0430\u0431\u0430\u0433\u0430\u0442\u043E \u0448\u0432\u0438\u0434\u0448\u0435, \u043A\u043E\u043B\u0438 \u0440\u0435\u0430\u043B\u0456\u0437\u043E\u0432\u0430\u043D\u0456 \u0430\u043F\u0430\u0440\u0430\u0442\u043D\u043E. \u041D\u0430\u043F\u0440\u0438\u043A\u043B\u0430\u0434, \u0443 \u043D\u0430\u0431\u043E\u0440\u0456 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0439 x87 \u043F\u0440\u0438\u0441\u0443\u0442\u043D\u0456 \u043A\u043E\u043C\u0430\u043D\u0434\u0438 \u0434\u043B\u044F \u0440\u043E\u0437\u0440\u0430\u0445\u0443\u043D\u043A\u0443 \u0437\u043D\u0430\u0447\u0435\u043D\u044C \u0441\u0438\u043D\u0443\u0441\u0430 \u0430\u0431\u043E \u043A\u043E\u0441\u0438\u043D\u0443\u0441\u0430."@uk . . . . . . . . . . "El x87 es un subconjunto de coma flotante del conjunto de instrucciones de la arquitectura x86. Se origin\u00F3 como una extensi\u00F3n del conjunto de instrucciones del 8086 en la forma de un coprocesador opcional de coma flotante que trabaj\u00F3 en paralelo con el correspondiente CPU x86. Estos microchips ten\u00EDan nombres que terminaban en \"87\" (8087, 80287, 80387)."@es . . "x87\u306Fx86\u30A2\u30FC\u30AD\u30C6\u30AF\u30C1\u30E3\u30FC\u547D\u4EE4\u30BB\u30C3\u30C8\u306E\u3046\u3061\u6D6E\u52D5\u5C0F\u6570\u70B9\u6570\u95A2\u4FC2\u306E\u30B5\u30D6\u30BB\u30C3\u30C8\u306E\u3053\u3068\u3067\u3042\u308B\u3002\u3082\u3068\u3082\u3068\u306Fx86\u7CFBCPU\u3068\u5354\u8ABF\u3057\u3066\u52D5\u4F5C\u3059\u308B\u30AA\u30D7\u30B7\u30E7\u30F3\u306E\u6D6E\u52D5\u5C0F\u6570\u70B9\u6570\u30B3\u30D7\u30ED\u30BB\u30C3\u30B5 (FPU) \u3067\u30B5\u30DD\u30FC\u30C8\u3055\u308C\u308B\u30018086\u547D\u4EE4\u30BB\u30C3\u30C8\u306E\u62E1\u5F35\u6A5F\u80FD\u3067\u3042\u3063\u305F\u3002\u3053\u308C\u3089\u306E\u30DE\u30A4\u30AF\u30ED\u30C1\u30C3\u30D7\u306F\u578B\u756A\u306E\u672B\u5C3E\u304C\"87\"\u3068\u306A\u3063\u3066\u3044\u305F\u3002\u3053\u308C\u306FNPX (Numeric Processor Extension) \u3068\u3057\u3066\u3082\u77E5\u3089\u308C\u308B\u3002\u57FA\u672C\u547D\u4EE4\u30BB\u30C3\u30C8\u306B\u5BFE\u3059\u308B\u4ED6\u306E\u62E1\u5F35\u3068\u540C\u69D8\u3001x87\u547D\u4EE4\u306F\u52D5\u4F5C\u3059\u308B\u30D7\u30ED\u30B0\u30E9\u30E0\u3092\u69CB\u7BC9\u3059\u308B\u306E\u306B\u5FC5\u9808\u306E\u3082\u306E\u3067\u306F\u306A\u3044\u304C\u3001\u983B\u51FA\u3059\u308B\u6570\u5024\u51E6\u7406\u306E\u30CF\u30FC\u30C9\u30A6\u30A7\u30A2\u304A\u3088\u3073\u30DE\u30A4\u30AF\u30ED\u30B3\u30FC\u30C9\u5B9F\u88C5\u306B\u3088\u308A\u3001\u3053\u308C\u3089\u306E\u51E6\u7406\u3092\u5BFE\u5FDC\u3059\u308B\u6A5F\u68B0\u8A9E\u30EB\u30FC\u30C1\u30F3\u304C\u884C\u3046\u3088\u308A\u3082\u306F\u308B\u304B\u306B\u9AD8\u901F\u306B\u884C\u3046\u3053\u3068\u304C\u3067\u304D\u308B\u3002x87\u547D\u4EE4\u30BB\u30C3\u30C8\u306F\u52A0\u7B97\u3001\u6E1B\u7B97\u3001\u6BD4\u8F03\u306E\u57FA\u672C\u7684\u306A\u6D6E\u52D5\u5C0F\u6570\u70B9\u6F14\u7B97\u3060\u3051\u3067\u306A\u304F\u3001\u30BF\u30F3\u30B8\u30A7\u30F3\u30C8\u95A2\u6570\u3084\u305D\u306E\u9006\u95A2\u6570\u306A\u3069\u306E\u8D85\u8D8A\u95A2\u6570\u306E\u6570\u5024\u6F14\u7B97\u3092\u542B\u3080\u3002 Intel 80486\u4EE5\u964D\u306E\u307B\u3068\u3093\u3069\u306Ex86\u30D7\u30ED\u30BB\u30C3\u30B5\u30FC\u306F\u3053\u308C\u3089\u306Ex87\u547D\u4EE4\u3092\u30E1\u30A4\u30F3CPU\u306B\u542B\u3093\u3067\u3044\u308B\u304C\u3001\u3053\u306E\u7528\u8A9E\u306F\u4ECA\u3067\u3082\u547D\u4EE4\u30BB\u30C3\u30C8\u306E\u4E00\u90E8\u3092\u6307\u3059\u306E\u306B\u7528\u3044\u3089\u308C\u308B\u3053\u3068\u304C\u3042\u308B\u3002PC\u306B\u304A\u3044\u3066x87\u547D\u4EE4\u304C\u6A19\u6E96\u306B\u306A\u308B\u524D\u3001\u30B3\u30F3\u30D1\u30A4\u30E9\u3084\u30D7\u30ED\u30B0\u30E9\u30DE\u306F\u6D6E\u52D5\u5C0F\u6570\u70B9\u6F14\u7B97\u3092\u5B9F\u884C\u3059\u308B\u305F\u3081\u306B\u304B\u306A\u308A\u9045\u3044\u6D6E\u52D5\u5C0F\u6570\u70B9\u6F14\u7B97\u30E9\u30A4\u30D6\u30E9\u30EA\u3092\u4F7F\u7528\u3057\u3066\u3044\u305F\u3002\u3053\u306E\u624B\u6CD5\u306F\uFF08\u4F4E\u4FA1\u683C\u306E\uFF09\u7D44\u307F\u8FBC\u307F\u30B7\u30B9\u30C6\u30E0\u3067\u306F\u4F9D\u7136\u4E00\u822C\u7684\u3067\u3042\u308B\u3002 \u53D6\u308A\u6271\u3046\u6D6E\u52D5\u5C0F\u6570\u70B9\u30C7\u30FC\u30BF\u306E\u30D5\u30A9\u30FC\u30DE\u30C3\u30C8\u306A\u3089\u3073\u306B\u6F14\u7B97\u306E\u4ED5\u69D8\u306FIntel 8087, Intel 80287\u306F\u6982\u306DIEEE-754\u306B\u6E96\u62E0\u3057\u3066\u3044\u308B\u304C\u3001\u975E\u4E92\u63DB\u306E\u90E8\u5206\u304C\u3042\u308B\u3002\u3053\u308C\u306F\u3001IEEE-754 \u306E\u7B56\u5B9A\u306BIntel\u304C\u53C2\u753B\u3057\u3066\u3044\u305F\u3082\u306E\u306E\u3001\u4ED5\u69D8\u304C\u78BA\u5B9A\u3057\u306A\u3044\u3046\u3061\u306B\u88FD\u54C1\u5316\u3055\u308C\u305F\u305F\u3081\u3067\u3042\u308B\u3002Intel 80187, Intel 80387, \u306A\u3089\u3073\u306BIntel 80486\u4EE5\u964D\u306ECPU\u306B\u5185\u8535\u3055\u308C\u308BFPU\u306F\u3001\u5B8C\u5168\u306BIEEE-754\u306B\u6E96\u62E0\u3057\u3066\u3044\u308B\u3002"@ja . . "X87"@es . . . "x87 \u2013 zestaw instrukcji matematycznych procesor\u00F3w z rodziny x86. Nazwa wzi\u0119\u0142a si\u0119 z tego, \u017Ce dawniej istnia\u0142 osobny uk\u0142ad odpowiedzialny za te instrukcje, a jego nazwa kodowa ko\u0144czy\u0142a si\u0119 w\u0142a\u015Bnie cyframi 87. Zestaw tych instrukcji nie jest wymagany do dzia\u0142ania, jednak\u017Ce mo\u017Ce skr\u00F3ci\u0107 czas wykonywania pewnych specyficznych operacji, np. obliczanie warto\u015Bci sinus i cosinus. Aktualnie wszystkie procesory s\u0105 wyposa\u017Cone w ten zestaw instrukcji. Pierwszym procesorem Intela posiadaj\u0105cym wbudowany uk\u0142ad x87 by\u0142 80486DX."@pl . . . . . "x87 \u00E8 un subset di istruzioni matematiche della famiglia di processori Intel x86. \u00C8 chiamata cos\u00EC perch\u00E9 inizialmente queste istruzioni erano processate da un chip esterno chiamato 8087. Come altre estensioni del set di istruzioni basilare del processore, queste istruzioni non sono strettamente necessarie ai programmi per funzionare. Invece, esse provvedono al supporto hardware per i calcoli matematici pi\u00F9 usati, permettendo a questi compiti di essere svolti in poche istruzioni. Ad esempio, il set di istruzioni x87 include istruzioni per calcolare il seno e il coseno di un valore."@it . . "x87 est un jeu d'instructions orient\u00E9 calcul en virgule flottante faisant partie de l'architecture de microprocesseurs x86. Les processeurs proposant ce jeu d'instructions sont l'Intel 8087, 80287, 80387, 80487, AMD K6, Pentium, Athlon, Pentium 4 et Athlon 64. \u00C0 partir du 80486, la plupart des processeurs x86 impl\u00E9mentent ce jeu d'instruction directement dans le processeur principal."@fr . "x87 \u2014 \u044D\u0442\u043E \u0441\u043F\u0435\u0446\u0438\u0430\u043B\u044C\u043D\u044B\u0439 \u043D\u0430\u0431\u043E\u0440 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0439 \u0434\u043B\u044F \u0440\u0430\u0431\u043E\u0442\u044B \u0441 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u0435\u0441\u043A\u0438\u043C\u0438 \u0432\u044B\u0447\u0438\u0441\u043B\u0435\u043D\u0438\u044F\u043C\u0438, \u044F\u0432\u043B\u044F\u044E\u0449\u0438\u0439\u0441\u044F \u043F\u043E\u0434\u043C\u043D\u043E\u0436\u0435\u0441\u0442\u0432\u043E\u043C \u0430\u0440\u0445\u0438\u0442\u0435\u043A\u0442\u0443\u0440\u044B \u043F\u0440\u043E\u0446\u0435\u0441\u0441\u043E\u0440\u043E\u0432 x86. \u0422\u0430\u043A\u043E\u0435 \u043D\u0430\u0437\u0432\u0430\u043D\u0438\u0435 \u043E\u043D \u043F\u043E\u043B\u0443\u0447\u0438\u043B, \u043F\u043E\u0442\u043E\u043C\u0443 \u0447\u0442\u043E \u043F\u0435\u0440\u0432\u043E\u043D\u0430\u0447\u0430\u043B\u044C\u043D\u044B\u0435 \u043E\u0442\u0434\u0435\u043B\u044C\u043D\u044B\u0435 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u0435\u0441\u043A\u0438\u0435 \u0441\u043E\u043F\u0440\u043E\u0446\u0435\u0441\u0441\u043E\u0440\u044B \u0438\u043C\u0435\u043B\u0438 \u043D\u0430\u0437\u0432\u0430\u043D\u0438\u044F, \u0437\u0430\u043A\u0430\u043D\u0447\u0438\u0432\u0430\u044E\u0449\u0438\u0435\u0441\u044F \u043D\u0430 87. \u041A\u0430\u043A \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043D\u0438\u044F \u0431\u0430\u0437\u043E\u0432\u043E\u0433\u043E \u043D\u0430\u0431\u043E\u0440\u0430 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0439 \u043F\u0440\u043E\u0446\u0435\u0441\u0441\u043E\u0440\u0430, \u044D\u0442\u0438 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0438 \u043D\u0435 \u044F\u0432\u043B\u044F\u044E\u0442\u0441\u044F \u0441\u0442\u0440\u043E\u0433\u043E \u043D\u0435\u043E\u0431\u0445\u043E\u0434\u0438\u043C\u044B\u043C\u0438 \u0434\u043B\u044F \u043F\u043E\u0441\u0442\u0440\u043E\u0435\u043D\u0438\u044F \u0440\u0430\u0431\u043E\u0447\u0435\u0439 \u043F\u0440\u043E\u0433\u0440\u0430\u043C\u043C\u044B, \u043D\u043E \u0431\u0443\u0434\u0443\u0447\u0438 \u0430\u043F\u043F\u0430\u0440\u0430\u0442\u043D\u043E \u0440\u0435\u0430\u043B\u0438\u0437\u043E\u0432\u0430\u043D\u043D\u044B\u043C\u0438, \u043E\u0431\u0449\u0438\u0435 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u0435\u0441\u043A\u0438\u0435 \u0437\u0430\u0434\u0430\u0447\u0438 \u043E\u043D\u0438 \u043F\u043E\u0437\u0432\u043E\u043B\u044F\u044E\u0442 \u0432\u044B\u043F\u043E\u043B\u043D\u044F\u0442\u044C \u0433\u043E\u0440\u0430\u0437\u0434\u043E \u0431\u044B\u0441\u0442\u0440\u0435\u0435. \u041D\u0430\u043F\u0440\u0438\u043C\u0435\u0440, \u0432 \u043D\u0430\u0431\u043E\u0440\u0435 \u0438\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0438\u0439 x87 \u043F\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044E\u0442 \u043A\u043E\u043C\u0430\u043D\u0434\u044B \u0434\u043B\u044F \u0440\u0430\u0441\u0447\u0451\u0442\u0430 \u0437\u043D\u0430\u0447\u0435\u043D\u0438\u0439 \u0441\u0438\u043D\u0443\u0441\u0430 \u0438\u043B\u0438 \u043A\u043E\u0441\u0438\u043D\u0443\u0441\u0430."@ru . "X87"@ru . "X87"@en . . . . . . . . . . . . . . . . "x87 \u2013 zestaw instrukcji matematycznych procesor\u00F3w z rodziny x86. Nazwa wzi\u0119\u0142a si\u0119 z tego, \u017Ce dawniej istnia\u0142 osobny uk\u0142ad odpowiedzialny za te instrukcje, a jego nazwa kodowa ko\u0144czy\u0142a si\u0119 w\u0142a\u015Bnie cyframi 87. Zestaw tych instrukcji nie jest wymagany do dzia\u0142ania, jednak\u017Ce mo\u017Ce skr\u00F3ci\u0107 czas wykonywania pewnych specyficznych operacji, np. obliczanie warto\u015Bci sinus i cosinus. Aktualnie wszystkie procesory s\u0105 wyposa\u017Cone w ten zestaw instrukcji. Pierwszym procesorem Intela posiadaj\u0105cym wbudowany uk\u0142ad x87 by\u0142 80486DX."@pl . . "19440"^^ . . . . . "x87 est un jeu d'instructions orient\u00E9 calcul en virgule flottante faisant partie de l'architecture de microprocesseurs x86. Les processeurs proposant ce jeu d'instructions sont l'Intel 8087, 80287, 80387, 80487, AMD K6, Pentium, Athlon, Pentium 4 et Athlon 64. \u00C0 partir du 80486, la plupart des processeurs x86 impl\u00E9mentent ce jeu d'instruction directement dans le processeur principal."@fr . . "X87"@ja . . . "X87"@ko . "1116835117"^^ . . "2532970"^^ . . . . . . . . "x87 is a floating-point-related subset of the x86 architecture instruction set. It originated as an extension of the 8086 instruction set in the form of optional floating-point coprocessors that worked in tandem with corresponding x86 CPUs. These microchips had names ending in \"87\". This was also known as the NPX (Numeric Processor eXtension). Like other extensions to the basic instruction set, x87 instructions are not strictly needed to construct working programs, but provide hardware and microcode implementations of common numerical tasks, allowing these tasks to be performed much faster than corresponding machine code routines can. The x87 instruction set includes instructions for basic floating-point operations such as addition, subtraction and comparison, but also for more complex num"@en . . . "x87\uC740 \uBD80\uB3D9\uC18C\uC218\uC810 \uC5F0\uC0B0\uC5D0 \uAD00\uB828\uB41C X86 \uC544\uD0A4\uD14D\uCC98 \uBA85\uB839\uC5B4 \uC9D1\uD569\uC744 \uC758\uBBF8\uD55C\uB2E4. NPX(Numeric Processor eXtension)\uB77C\uACE0\uB3C4 \uD55C\uB2E4.x87\uC740 \uCD08\uAE30\uC5D0\uB294 x86 \uD504\uB85C\uC138\uC11C\uC5D0 \uB300\uC751\uD558\uB294 \uCF54\uD504\uB85C\uC138\uC11C \uD615\uD0DC\uB85C \uC9C0\uC6D0\uB418\uC5C8\uC73C\uBA70, 80486 \uBAA8\uB378\uC5D0\uC11C\uBD80\uD130 \uCF54\uD504\uB85C\uC138\uC11C \uB300\uC2E0 CPU \uC790\uCCB4\uC5D0\uC11C x87 \uBA85\uB839\uC5B4\uB97C \uC9C0\uC6D0\uD558\uAE30 \uC2DC\uC791\uD588\uB2E4. x87\uC5D0\uC11C\uB294 \uBD80\uB3D9\uC18C\uC218\uC810 \uD45C\uC900 IEEE 754\uC758 32\uBE44\uD2B8 \uB2E8\uC815\uBC00\uB3C4, 64\uBE44\uD2B8 \uBC30\uC815\uBC00\uB3C4, 80\uBE44\uD2B8 \uD655\uC7A5 \uBC30\uC815\uBC00\uB3C4\uB97C \uC9C0\uC6D0\uD55C\uB2E4. \uAE30\uBCF8\uC801\uC73C\uB85C\uB294 \uB0B4\uBD80\uC758 \uBAA8\uB4E0 \uACC4\uC0B0\uC740 80\uBE44\uD2B8\uB85C \uC774\uB8E8\uC5B4\uC9C0\uAE30 \uB54C\uBB38\uC5D0, \uB2E8\uC815\uBC00\uB3C4/\uBC30\uC815\uBC00\uB3C4 \uACC4\uC0B0\uC774 \uC2E4\uC81C IEEE 754 \uACB0\uACFC\uC640\uB294 \uB2EC\uB77C\uC9C8 \uC218 \uC788\uB2E4. \uC774\uB97C \uBC29\uC9C0\uD558\uAE30 \uC704\uD558\uC5EC \uB0B4\uBD80 \uACC4\uC0B0 \uBC29\uC2DD\uC744 \uBCC0\uACBD\uD558\uB294 \uAC83\uB3C4 \uAC00\uB2A5\uD558\uB2E4."@ko . . . . "x87 - \u00C9 o nome gen\u00E9rico dado aos co-processadores Intel de ponto flutuante que funcionavam em conjunto com os processadores de dados, cada um com o seu par.Originou-se como uma extens\u00E3o da instru\u00E7\u00E3o set 8086 na forma de co-processadores de ponto flutuante opcional que trabalhou em conjunto com CPUs x86 correspondentes. Estes microchips tinham nomes terminados em \"87\". Como outras extens\u00F5es para o conjunto de instru\u00E7\u00F5es b\u00E1sicas, as instru\u00E7\u00F5es x87 n\u00E3o s\u00E3o estritamente necess\u00E1rias para a constru\u00E7\u00E3o de programas de trabalho, mas para fornecer hardware e microc\u00F3digo em implementa\u00E7\u00F5es de tarefas comuns num\u00E9rica, permitindo que estas tarefas sejam executadas muito mais rapidamente que as rotinas de c\u00F3digo normais.O conjunto de instru\u00E7\u00F5es x87 inclui instru\u00E7\u00F5es para opera\u00E7\u00F5es b\u00E1sicas de ponto flutu"@pt . . "x87 \u00E8 un subset di istruzioni matematiche della famiglia di processori Intel x86. \u00C8 chiamata cos\u00EC perch\u00E9 inizialmente queste istruzioni erano processate da un chip esterno chiamato 8087. Come altre estensioni del set di istruzioni basilare del processore, queste istruzioni non sono strettamente necessarie ai programmi per funzionare. Invece, esse provvedono al supporto hardware per i calcoli matematici pi\u00F9 usati, permettendo a questi compiti di essere svolti in poche istruzioni. Ad esempio, il set di istruzioni x87 include istruzioni per calcolare il seno e il coseno di un valore. I compilatori moderni, incluso il GNU Compiler Collection GCC, usano questo set di istruzioni espanso per rendere il codice pi\u00F9 veloce, grazie all'ottimizzazione del codice."@it . . . . . . . "x87 \u2014 \u0446\u0435 \u0441\u043F\u0435\u0446\u0456\u0430\u043B\u044C\u043D\u0438\u0439 \u043D\u0430\u0431\u0456\u0440 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0439 \u0434\u043B\u044F \u0440\u043E\u0431\u043E\u0442\u0438 \u0437 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u043D\u0438\u043C\u0438 \u043E\u0431\u0447\u0438\u0441\u043B\u0435\u043D\u043D\u044F\u043C\u0438, \u0454 \u043F\u0456\u0434\u043C\u043D\u043E\u0436\u0438\u043D\u043E\u044E \u0430\u0440\u0445\u0456\u0442\u0435\u043A\u0442\u0443\u0440\u0438 \u043F\u0440\u043E\u0446\u0435\u0441\u043E\u0440\u0456\u0432 x86. \u0422\u0430\u043A\u0443 \u043D\u0430\u0437\u0432\u0443 \u0432\u0456\u043D \u043E\u0442\u0440\u0438\u043C\u0430\u0432, \u0442\u043E\u043C\u0443 \u0449\u043E \u043F\u043E\u0447\u0430\u0442\u043A\u043E\u0432\u0456 \u043E\u043A\u0440\u0435\u043C\u0456 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u043D\u0456 \u0441\u043F\u0456\u0432\u043F\u0440\u043E\u0446\u0435\u0441\u043E\u0440\u043D\u0456 \u0447\u0438\u043F\u0438 \u043C\u0430\u043B\u0438 \u043D\u0430\u0437\u0432\u0438, \u0449\u043E \u0437\u0430\u043A\u0456\u043D\u0447\u0443\u044E\u0442\u044C\u0441\u044F \u043D\u0430 87. \u042F\u043A \u0456 \u0456\u043D\u0448\u0456 \u0440\u043E\u0437\u0448\u0438\u0440\u0435\u043D\u043D\u044F \u0431\u0430\u0437\u043E\u0432\u043E\u0433\u043E \u043D\u0430\u0431\u043E\u0440\u0443 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0439 \u043F\u0440\u043E\u0446\u0435\u0441\u043E\u0440\u0430, \u0446\u0456 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0457 \u043D\u0435 \u0454 \u0441\u0442\u0440\u043E\u0433\u043E \u043D\u0435\u043E\u0431\u0445\u0456\u0434\u043D\u0438\u043C\u0438 \u0434\u043B\u044F \u043F\u043E\u0431\u0443\u0434\u043E\u0432\u0438 \u0440\u043E\u0431\u043E\u0447\u043E\u0457 \u043F\u0440\u043E\u0433\u0440\u0430\u043C\u0438, \u0430\u043B\u0435 \u0437\u0430\u0433\u0430\u043B\u044C\u043D\u0456 \u043C\u0430\u0442\u0435\u043C\u0430\u0442\u0438\u0447\u043D\u0456 \u0437\u0430\u0432\u0434\u0430\u043D\u043D\u044F \u0432\u043E\u043D\u0438 \u0434\u043E\u0437\u0432\u043E\u043B\u044F\u044E\u0442\u044C \u0432\u0438\u043A\u043E\u043D\u0443\u0432\u0430\u0442\u0438 \u043D\u0430\u0431\u0430\u0433\u0430\u0442\u043E \u0448\u0432\u0438\u0434\u0448\u0435, \u043A\u043E\u043B\u0438 \u0440\u0435\u0430\u043B\u0456\u0437\u043E\u0432\u0430\u043D\u0456 \u0430\u043F\u0430\u0440\u0430\u0442\u043D\u043E. \u041D\u0430\u043F\u0440\u0438\u043A\u043B\u0430\u0434, \u0443 \u043D\u0430\u0431\u043E\u0440\u0456 \u0456\u043D\u0441\u0442\u0440\u0443\u043A\u0446\u0456\u0439 x87 \u043F\u0440\u0438\u0441\u0443\u0442\u043D\u0456 \u043A\u043E\u043C\u0430\u043D\u0434\u0438 \u0434\u043B\u044F \u0440\u043E\u0437\u0440\u0430\u0445\u0443\u043D\u043A\u0443 \u0437\u043D\u0430\u0447\u0435\u043D\u044C \u0441\u0438\u043D\u0443\u0441\u0430 \u0430\u0431\u043E \u043A\u043E\u0441\u0438\u043D\u0443\u0441\u0430."@uk . . . . "x87 (auch numeric processor extension, NPX) bezeichnet eine Untermenge des Befehlssatzes der x86-Architektur f\u00FCr Gleitkommaberechnungen. Es ist die \u00E4lteste Befehlssatzerweiterung f\u00FCr diese Architektur. Ihre Befehle sind nicht notwendig, um funktionierende Programme zu erzeugen, aber sie bieten Hardwareimplementierungen f\u00FCr h\u00E4ufige numerische Aufgaben, die damit wesentlich (10\u00D7 bis 30\u00D7) schneller erledigt werden. Bevor die x87-Befehle von den Prozessoren verarbeitet werden konnten, mussten Compiler oder Programmierer langsame Software-Bibliotheksprozeduren aufrufen, um derartige Gleitkommaoperationen durchzuf\u00FChren. Diese Vorgehensweise ist in vielen preiswerten eingebetteten Systemen noch immer h\u00E4ufig notwendig. Alternativ wird in Systemen, die keine Gleitkommaeinheit aufweisen, Festkommaarithmetik eingesetzt, da diese in Integer-Recheneinheiten effizient implementiert werden kann. Bis zum Intel 80386 bzw. i486SX wurden die x87-Befehle durch einen separaten Koprozessor implementiert. Dieser Koprozessor musste gesondert erworben und in den daf\u00FCr vorgesehenen Sockel auf der Hauptplatine eingesetzt werden. Gegen\u00FCber der Emulation durch Software war die Gleitkommarechnung auf einer 80x87-FPU 75- bis 100-mal schneller. In sp\u00E4teren x86-Prozessorgenerationen, aber schon ab dem (teureren) i486DX war der FPU-Teil meist schon im Hauptprozessor integriert. Der Begriff x87 wird aber immer noch verwendet, um die Untermenge des Befehlssatzes zu bezeichnen, die urspr\u00FCnglich in den x87-Koprozessoren verarbeitet wurde. Seit der Einf\u00FChrung von SSE2 haben x87-Einheiten viel von ihrer fr\u00FCheren Bedeutung verloren. F\u00FCr Berechnungen, die eine Mantisse von 64 Bit erfordern, wie sie mit den 80 Bit breiten x87-Registern m\u00F6glich ist, sind sie aber weiterhin wichtig."@de . . . . . . . . . . . . . "X87"@pl . . . . . . . "X87"@de . . . . . . . "x87 is a floating-point-related subset of the x86 architecture instruction set. It originated as an extension of the 8086 instruction set in the form of optional floating-point coprocessors that worked in tandem with corresponding x86 CPUs. These microchips had names ending in \"87\". This was also known as the NPX (Numeric Processor eXtension). Like other extensions to the basic instruction set, x87 instructions are not strictly needed to construct working programs, but provide hardware and microcode implementations of common numerical tasks, allowing these tasks to be performed much faster than corresponding machine code routines can. The x87 instruction set includes instructions for basic floating-point operations such as addition, subtraction and comparison, but also for more complex numerical operations, such as the computation of the tangent function and its inverse, for example. Most x86 processors since the Intel 80486 have had these x87 instructions implemented in the main CPU, but the term is sometimes still used to refer to that part of the instruction set. Before x87 instructions were standard in PCs, compilers or programmers had to use rather slow library calls to perform floating-point operations, a method that is still common in (low-cost) embedded systems."@en .