{"id":3517,"date":"2025-10-17T17:29:52","date_gmt":"2025-10-17T09:29:52","guid":{"rendered":"https:\/\/tobykskgd.life\/?p=3517"},"modified":"2025-10-17T17:30:36","modified_gmt":"2025-10-17T09:30:36","slug":"116","status":"publish","type":"post","link":"https:\/\/tobykskgd.life\/index.php\/116\/","title":{"rendered":"Python \u4e2d\u4e00\u4e2a\u53cd\u76f4\u89c9\u7684\u7cbe\u5ea6\u95ee\u9898"},"content":{"rendered":"\n<p>\u4e4b\u524d\u89c9\u5f97\u51fa\u73b0\u7cbe\u5ea6\u95ee\u9898\u4e00\u822c\u90fd\u662f\u56e0\u4e3a\u6570\u5b57\u592a\u957f\uff08\u6570\u5b57\u592a\u5927\uff0c\u6216\u8005\u5c0f\u6570\u70b9\u540e\u9762\u7684\u6570\u8fc7\u591a\uff09\uff0c\u53d8\u91cf\u88c5\u4e0d\u4e0b\u4e86\u5bfc\u81f4\u7684\u3002\u4eca\u5929\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>S2sq = 0.142\nn2 = 5\nb = S2sq \/ n2  # 0.142 \/ 5\nprint(b)\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4e2d\u7684 <code>b<\/code> \u6309\u9053\u7406\u6765\u8bf4\u5e94\u8be5\u662f 0.142\/5=0.0284\uff0c\u53ef\u662f\u8f93\u51fa\u5374\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>0.028399999999999998\n<\/code><\/pre>\n\n\n\n<p>\u5f53\u65f6\u9047\u5230\u8fd9\u4e2a\u95ee\u9898\u7684\u65f6\u5019\u5c31\u8fd9\u4e48\u4e5f\u60f3\u4e0d\u901a\uff0cPython \u4e2d\u7684\u6d6e\u70b9\u6570\u4e3a\u4ec0\u4e48\u50cf 0.0284 \u8fd9\u6837\u7b80\u5355\u7684\u6570\u5b57\u90fd\u8868\u793a\u4e0d\u4e86\uff1f\u4e8e\u662f\u4fbf\u8bf7\u6559\u4e86 GPT \u8001\u5e08\uff0c\u5f97\u5230\u7684\u56de\u7b54\u662f\u8fd9\u6837\u7684\uff08\u867d\u7136\u8fd8\u662f\u6709\u70b9\u4e00\u77e5\u534a\u89e3\uff09\uff1a<\/p>\n\n\n\n<p>\u8fd9\u662f<strong>\u8ba1\u7b97\u673a\u7684\u4e8c\u8fdb\u5236\u5b58\u50a8<\/strong>\u5bfc\u81f4\u7684\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1\ufe0f\u20e3 \u4e8c\u8fdb\u5236\u4e0d\u80fd\u7cbe\u786e\u8868\u793a\u67d0\u4e9b\u5c0f\u6570<\/h3>\n\n\n\n<p>\u8ba1\u7b97\u673a\u5185\u90e8\u7528 <strong>\u4e8c\u8fdb\u5236\u6d6e\u70b9\u6570<\/strong> \u5b58\u50a8\u6570\u5b57\uff08IEEE 754 \u6807\u51c6\uff09\u3002\u4e8c\u8fdb\u5236\u6d6e\u70b9\u6570\u8868\u793a\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"has-text-align-center\">\u6570\u5b57=\u7b26\u53f7\u00d7(1.\u5c0f\u6570\u90e8\u5206)<sub>2\u200b<\/sub>\u00d72<sup>\u6307\u6570<\/sup><\/p>\n\n\n\n<p>\u800c\u50cf <code>0.0284<\/code> \u8fd9\u6837\u7684\u5341\u8fdb\u5236\u5c0f\u6570\uff0c\u6709\u4e9b\u662f<strong>\u65e0\u9650\u5faa\u73af\u7684\u4e8c\u8fdb\u5236\u5c0f\u6570<\/strong>\uff0c\u7c7b\u4f3c\u5341\u8fdb\u5236\u91cc 1\/3=0.333\u2026<\/p>\n\n\n\n<p>\u5177\u4f53\u5230 <code>0.0284<\/code>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8f6c\u6210\u4e8c\u8fdb\u5236\u5927\u6982\u662f\uff1a <code>0.0284 \u2248 0.0000011100011010000111\u2026\u2082<\/code><\/li>\n\n\n\n<li>\u56e0\u4e3a\u4e8c\u8fdb\u5236\u4f4d\u6709\u9650\uff08Python \u7684\u6d6e\u70b9\u6570\u5927\u7ea6\u662f 53 \u4f4d\u6709\u6548\u4e8c\u8fdb\u5236\uff09\uff0c\u6240\u4ee5\u53ea\u80fd\u5b58\u50a8\u4e00\u4e2a\u8fd1\u4f3c\u503c\u3002<\/li>\n\n\n\n<li>\u8fd9\u5c31\u662f\u4f60\u770b\u5230\u7684 <code>0.028399999999999998<\/code>\uff0c\u5b83\u79bb <code>0.0284<\/code> \u975e\u5e38\u63a5\u8fd1\uff0c\u4f46\u4e0d\u662f\u5b8c\u5168\u76f8\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2\ufe0f\u20e3 \u4e3a\u4ec0\u4e48\u8ba1\u7b97\u6ca1\u95ee\u9898\uff1f<\/h3>\n\n\n\n<p>\u8ba1\u7b97\u673a\u505a\u8fd0\u7b97\u65f6\u90fd\u662f\u7528\u8fd9\u4e2a\u8fd1\u4f3c\u503c\u8fdb\u884c\u7684\uff0c\u8bef\u5dee\u975e\u5e38\u5c0f\uff1a 0.028399999999999998\u22120.0284\u2248\u22122\u00d710\u2212180.028399999999999998 &#8211; 0.0284 \\approx -2 \\times 10^{-18}0.028399999999999998\u22120.0284\u2248\u22122\u00d710\u221218<\/p>\n\n\n\n<p>\u8fd9\u5bf9\u7edf\u8ba1\u5b66\u6216\u8005\u5de5\u7a0b\u8ba1\u7b97\u51e0\u4e4e\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e4b\u524d\u89c9\u5f97\u51fa\u73b0\u7cbe\u5ea6\u95ee\u9898\u4e00\u822c\u90fd\u662f\u56e0\u4e3a\u6570\u5b57\u592a\u957f\uff08\u6570\u5b57\u592a\u5927\uff0c\u6216\u8005\u5c0f\u6570\u70b9\u540e\u9762\u7684\u6570\u8fc7\u591a\uff09\uff0c\u53d8\u91cf\u88c5\u4e0d\u4e0b\u4e86\u5bfc\u81f4\u7684\u3002\u4eca\u5929\u9047\u5230\u4e00\u4e2a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[32,3,25],"class_list":["post-3517","post","type-post","status-publish","format-standard","hentry","category-xxbj","tag-share","tag-xxbj","tag-xd"],"_links":{"self":[{"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/posts\/3517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/comments?post=3517"}],"version-history":[{"count":2,"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/posts\/3517\/revisions"}],"predecessor-version":[{"id":3519,"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/posts\/3517\/revisions\/3519"}],"wp:attachment":[{"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/media?parent=3517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/categories?post=3517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tobykskgd.life\/index.php\/wp-json\/wp\/v2\/tags?post=3517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}