{"version":"https://jsonfeed.org/version/1.1","title":"苏迟但到的主页","home_page_url":"https://kexohproject.pages.dev","feed_url":"https://kexohproject.pages.dev/json/","description":"<p>你好，欢迎访问个人主页！</p><p>擅长密码学，安全分析，数字水印等技术。</p><p>你可以联系我通过:findmykexin@gmail.com或者知乎私信。</p><p>我的知乎链接：<a href=\"https://www.zhihu.com/people/su-chi-dan-dao\" rel=\"noopener noreferrer\" target=\"_blank\">苏迟但到 - 知乎 (zhihu.com)</a></p><p>我的github链接：<a href=\"https://github.com/kexinoh\" rel=\"noopener noreferrer\" target=\"_blank\">kexinoh</a></p>","icon":"https://kexohcdn.gptapi.cyou/kexohproject/production/images/channel-2e54d141ee195646ca12a9d16507a908.jpg","favicon":"https://kexohcdn.gptapi.cyou/kexohproject/production/images/favicon-340a2925d02a0386f3b954a032834917.jpg","authors":[{"name":"苏迟但到"}],"language":"zh-cn","items":[{"id":"NFj5QnL0MxH","title":"计算机中的浮点数是不精确的，请问如何精确地计算分数运算？","content_html":"<p data-pid=\"0WK1fr8A\">使用符号运算即可。</p><p data-pid=\"ij2l3PdY\">符号运算会始终把变量作为一个符号，只有最后一步才代值进去运算或者不代值。</p><p data-pid=\"-ZkkrDvw\">对于任何一个分数我们都可以看做a/b。</p><p data-pid=\"kYohimFL\">(a/b)*(c/d)=(ac)/(bd)</p><p data-pid=\"YwXA892V\">然后最后一步再根据要求进行选择性输出，从而避免中间的误差。</p><p data-pid=\"dd-KTyqU\">例如你使用</p><p data-pid=\"x_nycBYl\">Sagemath就可以进行这种运算。</p>","content_text":"使用符号运算即可。\n\n符号运算会始终把变量作为一个符号，只有最后一步才代值进去运算或者不代值。\n\n对于任何一个分数我们都可以看做a/b。\n\n(a/b)*(c/d)=(ac)/(bd)\n\n然后最后一步再根据要求进行选择性输出，从而避免中间的误差。\n\n例如你使用\n\nSagemath就可以进行这种运算。","date_published":"2023-08-02T13:52:12.000Z","_microfeed":{"web_url":"https://kexohproject.pages.dev/i/计算机中的浮点数是不精确的-请问如何精确地计算分数运算-NFj5QnL0MxH/","json_url":"https://kexohproject.pages.dev/i/NFj5QnL0MxH/json/","rss_url":"https://kexohproject.pages.dev/i/NFj5QnL0MxH/rss/","guid":"NFj5QnL0MxH","status":"published","itunes:title":"New Article Title for iTunes","date_published_short":"Wed Aug 02 2023","date_published_ms":1690984332000}}],"_microfeed":{"microfeed_version":"0.1.2","base_url":"https://kexohproject.pages.dev","categories":[{"name":"Education","categories":[{"name":"Language Learning"}]},{"name":"Technology"}],"subscribe_methods":[{"name":"RSS","type":"rss","url":"https://kexohproject.pages.dev/rss/","image":"https://kexohproject.pages.dev/assets/brands/subscribe/rss.png","enabled":true,"editable":false,"id":"4KlfbtkEfzy"},{"name":"JSON","type":"json","url":"https://kexohproject.pages.dev/json/","image":"https://kexohproject.pages.dev/assets/brands/subscribe/json.png","enabled":true,"editable":false,"id":"DVFm7TYiNSq"}],"description_text":"你好，欢迎访问个人主页！\n\n擅长密码学，安全分析，数字水印等技术。\n\n你可以联系我通过:findmykexin@gmail.com或者知乎私信。\n\n我的知乎链接：苏迟但到 - 知乎 (zhihu.com)\n\n我的github链接：kexinoh","copyright":"©2024","itunes:type":"episodic","items_sort_order":"newest_first"}}