{"id":79782,"date":"2026-03-03T07:34:35","date_gmt":"2026-03-02T23:34:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/79782.html"},"modified":"2026-03-03T07:34:35","modified_gmt":"2026-03-02T23:34:35","slug":"%ef%bc%88%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%892-4-%e6%b5%ae%e7%82%b9%e8%bf%90%e7%ae%97%ef%bc%882-4-5-%e6%b5%ae%e7%82%b9%e8%bf%90%e7%ae%972-4-6-c%e8%af%ad%e8%a8%80%e4%b8%ad%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/79782.html","title":{"rendered":"\uff08\u5b66\u4e60\u7b14\u8bb0\uff092.4 \u6d6e\u70b9\u8fd0\u7b97\uff082.4.5 \u6d6e\u70b9\u8fd0\u7b97&amp;2.4.6 C\u8bed\u8a00\u4e2d\u7684\u6d6e\u70b9\u6570\uff09"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u7ebf\u7d22\u680f<\/li>\n<li>\u7b14\u8bb0\u680f<\/li>\n<li>\n<ul>\n<li>1. IEEE\u6d6e\u70b9\u8fd0\u7b97\u89c4\u5219<\/li>\n<li>\n<ul>\n<li>1&#xff09;\u57fa\u672c\u5b9a\u4e49<\/li>\n<li>2&#xff09;\u7279\u6b8a\u503c\u89c4\u5219<\/li>\n<\/ul>\n<\/li>\n<li>2. \u6d6e\u70b9\u8fd0\u7b97\u7684\u4ee3\u6570\u5c5e\u6027<\/li>\n<li>\n<ul>\n<li>1&#xff09;\u6d6e\u70b9\u52a0\u6cd5 (<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>              &#043;<\/p>\n<p>              f<\/p>\n<p>            &#043;^f<\/p>\n<p>         <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9324em;vertical-align: -0.0833em\"><\/span><span class=\"mord\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u200b)<\/li>\n<li>2&#xff09;\u6d6e\u70b9\u4e58\u6cd5 (<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>              \u2217<\/p>\n<p>              f<\/p>\n<p>            \u2217^f<\/p>\n<p>         <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/li>\n<\/ul>\n<\/li>\n<li>3. C\u8bed\u8a00\u4e2d\u7684\u6d6e\u70b9\u6570<\/li>\n<li>\n<ul>\n<li>1&#xff09;\u7c7b\u578b\u5bf9\u5e94<\/li>\n<li>2&#xff09;\u8bbf\u95ee\u7279\u6b8a\u503c<\/li>\n<li>3&#xff09;\u7ec3\u4e60\u98982.53&#xff08;\u5b9a\u4e49\u65e0\u7a77\u548c-0&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>4. \u6d6e\u70b9\u4e0e\u6574\u6570\u7684\u7c7b\u578b\u8f6c\u6362\u89c4\u5219<\/li>\n<li>5. \u65c1\u6ce8&#xff1a;Ariane 5 \u4e8b\u6545&#xff08;1996&#xff09;<\/li>\n<li>6. \u7ec3\u4e60\u98982.54 &#xff08;\u5047\u8bbeint\u4e3a32\u4f4d&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3\u680f<\/li>\n<\/ul>\n<hr \/>\n<h2>\u7ebf\u7d22\u680f<\/h2>\n<li>IEEE\u6d6e\u70b9\u8fd0\u7b97\u7684\u57fa\u672c\u89c4\u5219\u662f\u4ec0\u4e48&#xff1f;\u5982\u4f55\u5904\u7406\u7279\u6b8a\u503c&#xff08;\u5982\u65e0\u7a77\u3001NaN&#xff09;&#xff1f;<\/li>\n<li>\u6d6e\u70b9\u52a0\u6cd5\u5177\u6709\u7ed3\u5408\u6027\u5417&#xff1f;\u4e3a\u4ec0\u4e48&#xff1f;\u8bf7\u4e3e\u4f8b\u8bf4\u660e\u3002<\/li>\n<li>\u6d6e\u70b9\u8fd0\u7b97\u6ee1\u8db3\u54ea\u4e9b\u4ee3\u6570\u6027\u8d28&#xff08;\u53ef\u4ea4\u6362\u3001\u5355\u8c03\u6027&#xff09;&#xff1f;\u4e0d\u6ee1\u8db3\u54ea\u4e9b&#xff08;\u7ed3\u5408\u3001\u5206\u914d&#xff09;&#xff1f;<\/li>\n<li>C\u8bed\u8a00\u4e2dfloat\u548cdouble\u7c7b\u578b\u4e0eIEEE\u6807\u51c6\u6709\u4f55\u5173\u7cfb&#xff1f;\u5982\u4f55\u5b9a\u4e49\u65e0\u7a77\u5927\u548cNaN&#xff1f;<\/li>\n<li>\u5728\u4e0d\u540c\u6570\u503c\u7c7b\u578b&#xff08;int, float,double&#xff09;\u95f4\u8fdb\u884c\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u65f6&#xff0c;\u9075\u5faa\u4ec0\u4e48\u539f\u5219&#xff1f;<\/li>\n<li>Ariane 5\u706b\u7bad\u7206\u70b8\u4e8b\u6545\u7684\u6280\u672f\u6839\u6e90\u662f\u4ec0\u4e48&#xff1f;\u5e26\u6765\u4e86\u4ec0\u4e48\u6559\u8bad&#xff1f;<\/li>\n<li>&#xff08;\u7ec3\u4e60\u98982.54&#xff09;\u54ea\u4e9b\u7c7b\u578b\u8f6c\u6362\u6216\u8868\u8fbe\u5f0f\u662f\u7edd\u5bf9\u5b89\u5168\u7684&#xff1f;\u54ea\u4e9b\u53ef\u80fd\u51fa\u9519&#xff1f;<\/li>\n<hr \/>\n<h2>\u7b14\u8bb0\u680f<\/h2>\n<h3>1. IEEE\u6d6e\u70b9\u8fd0\u7b97\u89c4\u5219<\/h3>\n<h4>1&#xff09;\u57fa\u672c\u5b9a\u4e49<\/h4>\n<p>\u5bf9\u4e8e\u5b9e\u6570\u8fd0\u7b97 \u2299&#xff0c;\u6d6e\u70b9\u8fd0\u7b97\u5b9a\u4e49\u4e3a Round(x\u2299y)&#xff0c;\u5373\u5bf9\u7cbe\u786e\u6570\u5b66\u7ed3\u679c\u8fdb\u884c\u820d\u5165\u3002<\/p>\n<h4>2&#xff09;\u7279\u6b8a\u503c\u89c4\u5219<\/h4>\n<p>\u6807\u51c6\u660e\u786e\u5b9a\u4e49\u4e86\u6d89\u53ca\u7279\u6b8a\u503c&#xff08;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        \u2212<\/p>\n<p>        0<\/p>\n<p>        ,<\/p>\n<p>        \u00b1<\/p>\n<p>        \u221e<\/p>\n<p>        ,<\/p>\n<p>        N<\/p>\n<p>        a<\/p>\n<p>        N<\/p>\n<p>       \u22120, \u00b1\\\\infty, NaN<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8778em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">0<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\">\u00b1<\/span><span class=\"mord\">\u221e<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span>&#xff09;\u7684\u8fd0\u7b97&#xff0c;\u4f7f\u5176\u884c\u4e3a\u5408\u7406\u3002\u4f8b\u5982&#xff1a; &#xff08;1&#xff09;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         1<\/p>\n<p>          \u2212<\/p>\n<p>          0<\/p>\n<p>        \u2192<\/p>\n<p>        \u2212<\/p>\n<p>        \u221e<\/p>\n<p>       \\\\frac1{\u22120}\u2192\u2212\\\\infty<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.2484em;vertical-align: -0.4033em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em\"><span class=\"\" style=\"top: -2.655em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">\u2212<\/span><span class=\"mord mtight\">0<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.394em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.4033em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2192<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6667em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">\u2212<\/span><span class=\"mord\">\u221e<\/span><\/span><\/span><\/span><\/span> &#xff08;2&#xff09;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         1<\/p>\n<p>          &#043;<\/p>\n<p>          0<\/p>\n<p>        \u2192<\/p>\n<p>        &#043;<\/p>\n<p>        \u221e<\/p>\n<p>       \\\\frac1{&#043;0}\u2192&#043;\\\\infty<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.2484em;vertical-align: -0.4033em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em\"><span class=\"\" style=\"top: -2.655em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">&#043;<\/span><span class=\"mord mtight\">0<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.394em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.4033em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2192<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6667em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">&#043;<\/span><span class=\"mord\">\u221e<\/span><\/span><\/span><\/span><\/span> &#xff08;3&#xff09;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        \u221e<\/p>\n<p>        \u2212<\/p>\n<p>        \u221e<\/p>\n<p>        &#061;<\/p>\n<p>        N<\/p>\n<p>        a<\/p>\n<p>        N<\/p>\n<p>       \\\\infty\u2212\\\\infty&#061;NaN<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6667em;vertical-align: -0.0833em\"><\/span><span class=\"mord\">\u221e<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord\">\u221e<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span> &#xff08;4&#xff09;\u4efb\u4f55\u6d89\u53ca<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>        a<\/p>\n<p>        N<\/p>\n<p>       NaN<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span>\u7684\u8fd0\u7b97\u7ed3\u679c\u5747\u4e3a<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>        a<\/p>\n<p>        N<\/p>\n<p>       NaN<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<h3>2. \u6d6e\u70b9\u8fd0\u7b97\u7684\u4ee3\u6570\u5c5e\u6027<\/h3>\n<h4>1&#xff09;\u6d6e\u70b9\u52a0\u6cd5 (<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>       &#043;^f<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9324em;vertical-align: -0.0833em\"><\/span><span class=\"mord\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u200b)<\/h4>\n<p>&#xff08;1&#xff09;\u53ef\u4ea4\u6362&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        x<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        y<\/p>\n<p>        &#061;<\/p>\n<p>        y<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        x<\/p>\n<p>       x&#043;^f\u200by&#061;y&#043;^f\u200bx<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9324em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.625em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0435em;vertical-align: -0.1944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">x<\/span><\/span><\/span><\/span><\/span>\u3002 &#xff08;2&#xff09;\u4e0d\u53ef\u7ed3\u5408&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        (<\/p>\n<p>        x<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        y<\/p>\n<p>        )<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        z<\/p>\n<p>        \u2260<\/p>\n<p>        x<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        (<\/p>\n<p>        y<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        z<\/p>\n<p>        )<\/p>\n<p>       (x&#043;^fy)&#043;^f\u200bz\\\\neq x&#043;^f\u200b(y&#043;^f\u200bz)<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.044em\">z<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\"><span class=\"mrel\"><span class=\"mord vbox\"><span class=\"thinbox\"><span class=\"rlap\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"inner\"><span class=\"mord\"><span class=\"mrel\">\ue020<\/span><\/span><\/span><span class=\"fix\"><\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">&#061;<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.9324em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.044em\">z<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>\u3002 &#xff08;3&#xff09;\u793a\u4f8b&#xff08;\u5355\u7cbe\u5ea6&#xff09;&#xff1a;(3.14&#043;1e10)\u22121e10&#061;0.0&#xff0c;\u800c 3.14&#043;(1e10\u22121e10)&#061;3.14\u3002&#xff08;\u51e0\u4e4e&#xff09;\u5b58\u5728\u9006\u5143&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        x<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        (<\/p>\n<p>        \u2212<\/p>\n<p>        x<\/p>\n<p>        )<\/p>\n<p>        &#061;<\/p>\n<p>        0<\/p>\n<p>       x&#043;^f \u200b(\u2212x)&#061;0<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9324em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mopen\">(<\/span><span class=\"mord\">\u2212<\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0<\/span><\/span><\/span><\/span><\/span>\u3002\u4f8b\u5916\u662f<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        \u221e<\/p>\n<p>       \\\\infty<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord\">\u221e<\/span><\/span><\/span><\/span><\/span>\u548c<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>        a<\/p>\n<p>        N<\/p>\n<p>       NaN<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span>\u3002 &#xff08;4&#xff09;\u6ee1\u8db3\u5355\u8c03\u6027&#xff1a;\u82e5<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>        \u2265<\/p>\n<p>        b<\/p>\n<p>       a\u2265b<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\">b<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u5219\u5bf9\u4efb\u610f\u975e<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        N<\/p>\n<p>        a<\/p>\n<p>        N<\/p>\n<p>       NaN<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span>\u7684<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        x<\/p>\n<p>       x<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord mathnormal\">x<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u6709<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        x<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        a<\/p>\n<p>        \u2265<\/p>\n<p>        x<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        b<\/p>\n<p>       x&#043;^f\u200ba\u2265x&#043;^f\u200bb<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9324em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.9324em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">b<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<h4>2&#xff09;\u6d6e\u70b9\u4e58\u6cd5 (<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>       \u2217^f<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/h4>\n<p>&#xff08;1&#xff09;\u53ef\u4ea4\u6362&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        x<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        y<\/p>\n<p>        &#061;<\/p>\n<p>        y<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        x<\/p>\n<p>       x\u2217^f\u200by&#061;y\u2217^f\u200bx<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.625em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0435em;vertical-align: -0.1944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">x<\/span><\/span><\/span><\/span><\/span>\u3002 &#xff08;2&#xff09;\u4e0d\u53ef\u7ed3\u5408&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        (<\/p>\n<p>        x<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        y<\/p>\n<p>        )<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        z<\/p>\n<p>        \u2260<\/p>\n<p>        x<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        (<\/p>\n<p>        y<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        z<\/p>\n<p>        )<\/p>\n<p>       (x\u2217^f\u200by)\u2217^f\u200bz\\\\neq x\u2217^f\u200b(y\u2217^f \u200bz)<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.044em\">z<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\"><span class=\"mrel\"><span class=\"mord vbox\"><span class=\"thinbox\"><span class=\"rlap\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"inner\"><span class=\"mord\"><span class=\"mrel\">\ue020<\/span><\/span><\/span><span class=\"fix\"><\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">&#061;<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">x<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">y<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.044em\">z<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>\u3002 \u793a\u4f8b&#xff08;\u5355\u7cbe\u5ea6&#xff09;&#xff1a;(1e20\u22171e20)\u22171e\u221220&#061;&#043;\u221e&#xff0c;\u800c 1e20\u2217(1e20\u22171e\u221220)&#061;1e20\u3002 &#xff08;3&#xff09;\u4e0d\u6ee1\u8db3\u5206\u914d\u5f8b&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        (<\/p>\n<p>        b<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        c<\/p>\n<p>        )<\/p>\n<p>        \u2260<\/p>\n<p>        (<\/p>\n<p>        a<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        b<\/p>\n<p>        )<\/p>\n<p>         &#043;<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        (<\/p>\n<p>        a<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        c<\/p>\n<p>        )<\/p>\n<p>       a\u2217^f\u200b(b&#043;^f\u200bc)\\\\neq(a\u2217^f\u200bb)&#043;^f\u200b(a\u2217^f\u200bc)<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">b<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">c<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\"><span class=\"mrel\"><span class=\"mord vbox\"><span class=\"thinbox\"><span class=\"rlap\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"inner\"><span class=\"mord\"><span class=\"mrel\">\ue020<\/span><\/span><\/span><span class=\"fix\"><\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">&#061;<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">b<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">&#043;<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0991em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">c<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span>\u3002 \u793a\u4f8b&#xff1a;1e20\u2217(1e20\u22121e20)&#061;0.0&#xff0c;\u800c (1e20\u22171e20)\u2212(1e20\u22171e20)&#061;NaN\u3002 &#xff08;4&#xff09;\u6ee1\u8db3\u5355\u8c03\u6027&#xff1a; \u82e5<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>        \u2265<\/p>\n<p>        b<\/p>\n<p>       a\u2265b<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\">b<\/span><\/span><\/span><\/span><\/span>\u4e14<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        c<\/p>\n<p>        \u2265<\/p>\n<p>        0<\/p>\n<p>       c\u22650<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">c<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u5219<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        c<\/p>\n<p>        \u2265<\/p>\n<p>        b<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        c<\/p>\n<p>       a\u2217^f\u200bc\u2265b\u2217^f\u200bc<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">c<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">b<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">c<\/span><\/span><\/span><\/span><\/span>\u3002 \u82e5<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>        \u2265<\/p>\n<p>        b<\/p>\n<p>       a\u2265b<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6944em\"><\/span><span class=\"mord mathnormal\">b<\/span><\/span><\/span><\/span><\/span>\u4e14<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        c<\/p>\n<p>        \u2264<\/p>\n<p>        0<\/p>\n<p>       c\u22640<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord mathnormal\">c<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u5219<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        c<\/p>\n<p>        \u2264<\/p>\n<p>        b<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        c<\/p>\n<p>       a\u2217^f\u200bc\u2264b\u2217^f\u200bc<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">c<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2264<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">b<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.4306em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">c<\/span><\/span><\/span><\/span><\/span>\u3002 &#xff08;5&#xff09;\u975e\u8d1f\u6027&#xff1a;\u53ea\u8981<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>        \u2260<\/p>\n<p>        N<\/p>\n<p>        a<\/p>\n<p>        N<\/p>\n<p>       a\\\\neq NaN<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\"><span class=\"mrel\"><span class=\"mord vbox\"><span class=\"thinbox\"><span class=\"rlap\"><span class=\"strut\" style=\"height: 0.8889em;vertical-align: -0.1944em\"><\/span><span class=\"inner\"><span class=\"mord\"><span class=\"mrel\">\ue020<\/span><\/span><\/span><span class=\"fix\"><\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">&#061;<\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span>&#xff0c;\u5c31\u6709<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        a<\/p>\n<p>         \u2217<\/p>\n<p>         f<\/p>\n<p>        \u200b<\/p>\n<p>        a<\/p>\n<p>        \u2265<\/p>\n<p>        0.0<\/p>\n<p>       a\u2217^f\u200ba\u22650.0<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8491em\"><\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\"><span class=\"mbin\">\u2217<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8491em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.1076em\">f<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7719em;vertical-align: -0.136em\"><\/span><span class=\"mord\">\u200b<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">\u2265<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em\"><\/span><span class=\"mord\">0.0<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n<h3>3. C\u8bed\u8a00\u4e2d\u7684\u6d6e\u70b9\u6570<\/h3>\n<h4>1&#xff09;\u7c7b\u578b\u5bf9\u5e94<\/h4>\n<p>\u5728\u652f\u6301IEEE\u7684\u673a\u5668\u4e0a&#xff0c;float\u2194 \u5355\u7cbe\u5ea6&#xff0c;double\u2194 \u53cc\u7cbe\u5ea6\u3002\u820d\u5165\u65b9\u5f0f\u9ed8\u8ba4\u4e3a\u5411\u5076\u6570\u820d\u5165\u3002<\/p>\n<h4>2&#xff09;\u8bbf\u95ee\u7279\u6b8a\u503c<\/h4>\n<p>C\u6807\u51c6\u4e0d\u5f3a\u5236\u8981\u6c42IEEE&#xff0c;\u56e0\u6b64\u8bbf\u95ee\u7279\u6b8a\u503c&#xff08;\u00b1\u221e, NaN&#xff09;\u662f\u7f16\u8bd1\u5668\u76f8\u5173\u7684\u3002\u4f8b\u5982&#xff0c;\u5728GCC\u4e2d&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">_GNU_SOURCE<\/span> <span class=\"token expression\"><span class=\"token number\">1<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;math.h&gt;<\/span><\/span><br \/>\n<span class=\"token comment\">\/\/ \u4e4b\u540e\u53ef\u4f7f\u7528 INFINITY \u548c NAN<\/span><\/p>\n<h4>3&#xff09;\u7ec3\u4e60\u98982.53&#xff08;\u5b9a\u4e49\u65e0\u7a77\u548c-0&#xff09;<\/h4>\n<p>\u5229\u7528\u6ea2\u51fa\u5230\u65e0\u7a77\u7684\u7279\u6027\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260302233433-69a61e899b9c1.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">POS_INFINITY<\/span> <span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token number\">1.0<\/span><span class=\"token operator\">\/<\/span><span class=\"token number\">0.0<\/span><span class=\"token punctuation\">)<\/span>  <\/span><span class=\"token comment\">\/\/ \u6216 1e400<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">NEG_INFINITY<\/span> <span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&#8211;<\/span>POS_INFINITY<span class=\"token punctuation\">)<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">NEG_ZERO<\/span> <span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">0.0<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260302233433-69a61e89cbb07.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>4. \u6d6e\u70b9\u4e0e\u6574\u6570\u7684\u7c7b\u578b\u8f6c\u6362\u89c4\u5219<\/h3>\n<p>&#xff08;1&#xff09;int\u2192 float&#xff1a;\u4e0d\u4f1a\u6ea2\u51fa&#xff0c;\u4f46\u53ef\u80fd\u88ab\u820d\u5165&#xff08;\u7cbe\u5ea6\u635f\u5931&#xff09;\u3002 &#xff08;2&#xff09;int\/float\u2192 double&#xff1a;double\u7cbe\u5ea6\u66f4\u9ad8\u8303\u56f4\u66f4\u5927&#xff0c;\u53ef\u4fdd\u7559\u7cbe\u786e\u503c\u3002 &#xff08;3&#xff09;double\u2192 float&#xff1a;\u53ef\u80fd\u6ea2\u51fa\u4e3a \u00b1\u221e&#xff0c;\u6216\u56e0\u7cbe\u5ea6\u964d\u4f4e\u88ab\u820d\u5165\u3002 &#xff08;4&#xff09;float\/double\u2192 int&#xff1a; \u503c\u5c06\u5411\u96f6\u820d\u5165&#xff08;\u622a\u65ad&#xff09;\u3002 \u53ef\u80fd\u6ea2\u51fa&#xff0c;C\u6807\u51c6\u672a\u5b9a\u4e49\u7ed3\u679c\u3002\u5728x86\u7cfb\u7edf\u4e0a&#xff0c;\u4f1a\u5f97\u5230\u201c\u6574\u6570\u4e0d\u786e\u5b9a\u503c\u201d TMin_w\u3002<\/p>\n<h3>5. \u65c1\u6ce8&#xff1a;Ariane 5 \u4e8b\u6545&#xff08;1996&#xff09;<\/h3>\n<p>&#xff08;1&#xff09;\u76f4\u63a5\u539f\u56e0&#xff1a;64\u4f4d\u6d6e\u70b9\u6570&#xff08;\u6c34\u5e73\u901f\u7387&#xff09;\u8f6c\u6362\u4e3a16\u4f4d\u6574\u6570\u65f6\u53d1\u751f\u6ea2\u51fa\u3002\u8fd9\u4e2a\u6ea2\u51fa\u503c\u88ab\u8bef\u5f53\u4f5c\u6709\u6548\u6570\u636e\u53d1\u9001&#xff0c;\u5bfc\u81f4\u706b\u7bad\u5931\u63a7\u7206\u70b8\u3002 &#xff08;2&#xff09;\u6839\u672c\u539f\u56e0&#xff1a;\u4ee3\u7801\u4eceAriane 4\u91cd\u7528&#xff0c;\u4f46\u672a\u91cd\u65b0\u9a8c\u8bc1\u5047\u8bbe\u3002Ariane 5\u7684\u901f\u5ea6\u8fdc\u8d85Ariane 4&#xff0c;\u4f7f\u539f16\u4f4d\u6574\u6570\u8303\u56f4\u5047\u8bbe\u5931\u6548\u3002 &#xff08;3&#xff09;\u6559\u8bad&#xff1a; \u5bf9\u6d6e\u70b9\u5230\u6574\u6570\u7684\u8f6c\u6362\u5fc5\u987b\u8fdb\u884c\u4e25\u683c\u7684\u8fb9\u754c\u68c0\u67e5\u3002 \u91cd\u7528\u4ee3\u7801\u65f6&#xff0c;\u5fc5\u987b\u91cd\u65b0\u8bc4\u4f30\u5176\u524d\u7f6e\u6761\u4ef6\u548c\u5047\u8bbe\u3002 \u7cfb\u7edf\u5b89\u5168\u4e0d\u80fd\u4f9d\u8d56\u4e8e\u201c\u7406\u8bba\u4e0a\u4e0d\u4f1a\u53d1\u751f\u201d\u7684\u5047\u8bbe\u3002<\/p>\n<h3>6. \u7ec3\u4e60\u98982.54 &#xff08;\u5047\u8bbeint\u4e3a32\u4f4d&#xff09;<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260302233433-69a61e89edae6.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260302233434-69a61e8a35ebf.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<hr \/>\n<h2>\u603b\u7ed3\u680f<\/h2>\n<p>\u672c\u8282\u7efc\u5408\u63a2\u8ba8\u4e86\u6d6e\u70b9\u6570\u7684\u8fd0\u7b97\u89c4\u5219\u3001C\u8bed\u8a00\u5b9e\u73b0\u53ca\u5176\u5b9e\u8df5\u6559\u8bad\u3002<\/p>\n<li>\u8fd0\u7b97\u7684\u672c\u8d28&#xff1a;IEEE\u6d6e\u70b9\u8fd0\u7b97\u662f\u5bf9\u7cbe\u786e\u6570\u5b66\u7ed3\u679c\u8fdb\u884c\u820d\u5165\u3002\u5b83\u4fdd\u7559\u4e86\u53ef\u4ea4\u6362\u6027\u3001\u5355\u8c03\u6027\u7b49\u826f\u597d\u6027\u8d28&#xff0c;\u4f46\u727a\u7272\u4e86\u7ed3\u5408\u6027\u548c\u5206\u914d\u5f8b\u3002\u8fd9\u4f7f\u5f97\u7f16\u8bd1\u5668\u4f18\u5316\u548c\u6570\u503c\u7a0b\u5e8f\u63a8\u7406\u53d8\u5f97\u590d\u6742\u3002<\/li>\n<li>C\u8bed\u8a00\u7684\u6620\u5c04\u4e0e\u5c40\u9650&#xff1a;C\u7684float\/double\u901a\u5e38\u5bf9\u5e94IEEE\u683c\u5f0f&#xff0c;\u4f46\u6807\u51c6\u672a\u5f3a\u5236&#xff0c;\u5bfc\u81f4\u8bbf\u95ee\u7279\u6b8a\u503c\u7b49\u64cd\u4f5c\u4f9d\u8d56\u7f16\u8bd1\u5668\u6269\u5c55\u3002\u7c7b\u578b\u8f6c\u6362\u89c4\u5219\u63ed\u793a\u4e86\u7cbe\u5ea6\u4e0e\u8303\u56f4\u7684\u6743\u8861&#xff1a;\u5927\u7c7b\u578b\u8f6c\u5c0f\u7c7b\u578b\u53ef\u80fd\u820d\u5165\u6216\u6ea2\u51fa&#xff0c;\u6d6e\u70b9\u8f6c\u6574\u6570\u4f1a\u622a\u65ad\u5e76\u53ef\u80fd\u6ea2\u51fa\u3002<\/li>\n<li>\u8840\u7684\u6559\u8bad&#xff1a;Ariane5\u4e8b\u6545\u662f\u5de5\u7a0b\u53f2\u4e0a\u7684\u7ecf\u5178\u5931\u8d25\u6848\u4f8b\u3002\u5b83\u8b66\u793a\u6211\u4eec&#xff1a;\u6c38\u8fdc\u4e0d\u8981\u5ffd\u89c6\u6d6e\u70b9\u8fd0\u7b97&#xff08;\u7279\u522b\u662f\u5411\u6574\u6570\u8f6c\u6362&#xff09;\u7684\u8fb9\u754c\u6761\u4ef6&#xff1b;\u4ee3\u7801\u91cd\u7528\u5fc5\u987b\u91cd\u65b0\u9a8c\u8bc1\u5176\u8fd0\u884c\u73af\u5883\u7684\u5047\u8bbe\u3002<\/li>\n<li>\u6838\u5fc3\u7f16\u7a0b\u610f\u8bc6&#xff1a;\u7a0b\u5e8f\u5458\u5fc5\u987b\u610f\u8bc6\u5230&#xff0c;\u6d6e\u70b9\u8fd0\u7b97\u662f\u8fd1\u4f3c\u4f46\u786e\u5b9a\u7684\u3002\u7406\u89e3\u5176\u89c4\u5219&#xff08;\u5982\u7ec3\u4e60\u98982.54\u6240\u793a&#xff09;\u662f\u9884\u6d4b\u7a0b\u5e8f\u884c\u4e3a\u3001\u907f\u514d\u5fae\u5999\u9519\u8bef\u3001\u7f16\u5199\u53ef\u9760\u6570\u503c\u4ee3\u7801\u7684\u57fa\u7840\u3002\u5728\u6d89\u53ca\u7cbe\u5ea6\u8f6c\u6362\u548c\u6df7\u5408\u7c7b\u578b\u8fd0\u7b97\u65f6&#xff0c;\u5fc5\u987b\u4fdd\u6301\u9ad8\u5ea6\u8b66\u60d5\u3002<\/li>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u7ebf\u7d22\u680f\u7b14\u8bb0\u680f1. IEEE\u6d6e\u70b9\u8fd0\u7b97\u89c4\u52191&#xff09;\u57fa\u672c\u5b9a\u4e492&#xff09;\u7279\u6b8a\u503c\u89c4\u52192. \u6d6e\u70b9\u8fd0\u7b97\u7684\u4ee3\u6570\u5c5e\u60271&#xff09;\u6d6e\u70b9\u52a0\u6cd5 (f^ff\u200b)2&#xff09;\u6d6e\u70b9\u4e58\u6cd5 (\u2217f\u2217^f\u2217f)3. 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