{"id":478,"date":"2022-08-05T22:14:55","date_gmt":"2022-08-05T14:14:55","guid":{"rendered":"http:\/\/www.aqwu.net\/wp\/?p=478"},"modified":"2022-09-19T23:52:55","modified_gmt":"2022-09-19T15:52:55","slug":"%e7%a5%9e%e5%a5%87%e7%9a%84%e6%95%b0%e5%ad%971%ef%bc%9a998001","status":"publish","type":"post","link":"https:\/\/www.aqwu.net\/wp\/?p=478","title":{"rendered":"\u795e\u5947\u7684\u6570\u5b571\uff1a998001"},"content":{"rendered":"\n<p>\u5982\u679c\u4f60\u75281\u9664\u4ee5998001\uff0c\u4f60\u4f1a\u5f97\u5230000\u5230999\u7684\u6240\u6709\u4e09\u4f4d\u6570\uff0c\u9664\u4e86998.<\/p>\n\n\n\n<p>\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream>\n#include &lt;mpir.h>\n#include &lt;mpirxx.h>\n\nusing namespace std;\n\nint main()\n{\n    mpf_class f1;\n    mpf_class f2;\n    mpf_class f3;\n    \n    mp_bitcnt_t prec = 9952;\n\n    mpf_set_prec(f1.get_mpf_t(), prec);\n    mpf_set_prec(f2.get_mpf_t(), prec);\n    mpf_set_prec(f3.get_mpf_t(), prec);\n\n    f1 = 1;\n    f2 = 21;\n    f3 = f1 \/ f2;\n    cout &lt;&lt; \"f1:\" &lt;&lt; f1 &lt;&lt; endl;\n    cout &lt;&lt; \"f2:\" &lt;&lt; f2 &lt;&lt; endl;\n    cout &lt;&lt; \"f3:\" &lt;&lt; f3 &lt;&lt; endl;\n\n    mp_bitcnt_t t = mpf_get_prec(f3.get_mpf_t());\n    cout &lt;&lt; \"t:\" &lt;&lt; t &lt;&lt; endl;\n\n    mp_exp_t exp = 0;\n\n    char *Val= mpf_get_str(NULL, &amp;exp, 10, 0, f3.get_mpf_t());\n    cout &lt;&lt; \"Val:0.000\\n00\" &lt;&lt; Val &lt;&lt; endl;\n    cout &lt;&lt; \"exp:\" &lt;&lt; exp &lt;&lt; endl;\n    free(Val);\n}\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"543\" src=\"http:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-1024x543.png\" alt=\"\" class=\"wp-image-481\" srcset=\"https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-1024x543.png 1024w, https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-300x159.png 300w, https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-768x407.png 768w, https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-1536x815.png 1536w, https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-2048x1086.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5982\u679c\u6211\u4eec\u589e\u52a0\u7cbe\u5ea6\u503c\uff0c\u5219\u4f1a\u53d1\u73b0\u5faa\u73af\u4e86\uff0c\u5f88\u5947\u5999\u7684\u6570\u5b57\u3002<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>    mp_bitcnt_t prec = 20000;<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"988\" src=\"http:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-2-1024x988.png\" alt=\"\" class=\"wp-image-484\" srcset=\"https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-2-1024x988.png 1024w, https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-2-300x289.png 300w, https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-2-768x741.png 768w, https:\/\/www.aqwu.net\/wp\/wp-content\/uploads\/2022\/08\/998001-2.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u4f60\u75281\u9664\u4ee5998001\uff0c\u4f60\u4f1a\u5f97\u5230000\u5230999\u7684\u6240\u6709\u4e09\u4f4d\u6570\uff0c\u9664\u4e86998. \u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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