最接近五的圆形货币 [英] Round currency closest to five
本文介绍了最接近五的圆形货币的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
例如,我想将我的值四舍五入到最接近的 5 美分:
I'd like to round my values to the closest of 5 cent for example:
5.31 -> 5.30
5.35 -> 5.35
5.33 -> 5.35
5.38 -> 5.40
目前我通过使用以下方法获取十进制值:
Currently I'm doing it by getting the decimal values using:
let numbers = 5.33
let decimal = (numbers - rint(numbers)) * 100
let rounded = rint(numbers) + (5 * round(decimal / 5)) / 100
// This results in 5.35
我想知道是否有一个步骤更少的更好的方法,因为有时 numbers - rint(numbers)
会给我一个奇怪的结果,比如:
I was wondering if there's a better method with fewer steps because sometimes numbers - rint(numbers)
is giving me a weird result like:
let numbers = 12.12
let decimal = (numbers - rint(numbers)) * 100
// This results in 11.9999999999999
推荐答案
原来..真的很简单
let x: Float = 1.03 //or whatever value, you can also use the Double type
let y = round(x * 20) / 20
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