Truncating a number without rounding

101 次查看（过去 30 天）

wesso Dadoyan 2015-8-18

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/234470-truncating-a-number-without-rounding

评论： Walter Roberson 2015-8-18

Is it possible to truncate a number in matlab without rounding it to the first decimal point? for example, 5.17 I want it to be 5.1 and not 5.2 Thanks

采纳的回答

Azzi Abdelmalek 2015-8-18

3
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/234470-truncating-a-number-without-rounding#answer_189706

在 MATLAB Online 中打开

fix(a*10)/10

For negative values you need to figure out whether you want -5.17 to go to -5.1 or to -5.2 . If you want the truncation to be "at most" the original value, then you would use floor(a*10)/10 . If you want the truncation to be "closer to 0" then you would use fix() like Azzi shows.

请先登录，再进行评论。