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This is an easy one. But anyway, I think it is a good idea to have this question answered here for a faster, easier reference.
This operation:
(/ 3 2) yields this:
3/2 I need one function to round up, which would yield 2 and another one to round down, which would yield 1.
928
Math/round is the next step up in rounding technology. As with many other primitive manipulation functions in Clojure, the language prefers not to reinvent the wheel. Math/round is a Java function that rounds by adding 1/2 to a number before dropping decimal places similarly to int.
Put simply, if the last digit is less than 5, round the previous digit down. However, if it's 5 or more than you should round the previous digit up. So, if the number you are about to round is followed by 5, 6, 7, 8, 9 round the number up. And if it is followed by 0, 1, 2, 3, 4 round the number down.
round() method rounds a number to the nearest integer.
You can java interop (Math/(floor|ceil). E.g.:
user=> (int (Math/floor (/ 3 2))) 1 user=> (int (Math/ceil (/ 3 2))) 2 If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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