• 半整数约化为相邻偶数
  • 银行家规则
  • 四舍六入五留双
  • 奇进偶舍

References

  • https://en.wikipedia.org/wiki/Rounding#Round_half_to_even
  • https://www.shuxuele.com/numbers/rounding-methods.html
  • http://www.bzwz.com/html_news/news_40398.html
  • http://www.gb688.cn/bzgk/gb/newGbInfo?hcno=7C962A3A9554F626A9305C24B36E6DA6 or http://www.gb688.cn/bzgk/gb/std_list?p.p1=0&p.p90=circulation_date&p.p91=desc&p.p2=%E6%95%B0%E5%80%BC%20%E4%BF%AE%E7%BA%A6
  • https://baike.baidu.com/item/%E6%95%B0%E5%80%BC%E4%BF%AE%E7%BA%A6
  • https://baike.baidu.com/item/%E5%9B%9B%E8%88%8D%E5%85%AD%E5%85%A5%E4%BA%94%E6%88%90%E5%8F%8C
  • https://zh.wikipedia.org/wiki/%E6%95%B0%E5%80%BC%E4%BF%AE%E7%BA%A6
  • https://baike.baidu.com/item/%E6%95%B0%E5%80%BC%E4%BF%AE%E7%BA%A6%E8%A7%84%E5%88%99
  • https://zh.wikipedia.org/wiki/%E5%8D%8A%E6%95%B4%E6%95%B8
  • http://www.gb688.cn/bzgk/gb/newGbInfo?hcno=7C962A3A9554F626A9305C24B36E6DA6

  • http://www.wolframalpha.com/input/?i=banker%27s+rounding+12.51

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