I show values in my app by:
String(format: "%4.0f", CountedValue)
But it shows value like 241.
How can I round value by following maths mathematical rules?
For example: 240 instead 241, or 250 instead 245.
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rmaddy
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Laura Manukyan
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Logic can be found there: https://stackoverflow.com/questions/35613696/round-currency-closest-to-five – Larme Jul 04 '18 at 16:39
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There aren't any methods that do that, but you could implement them.
For example, for 241 or 242, you could get the modulus of the division by 5 and compare by that.
Example: let mod = number % 5 (results in 1 for 241, 2 for 242, etc). As 245 is a boundary case which modulus is 0, we'll add 1 to the number (basically an offset).
let mod = (number + 1) % 5
var result: Int = number - mod
if mod >= 3 { result += 5 }
This way, result will be 240 for 241 and 242, and 245 for 243, 244 and 245.
Alejandro Iván
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But based on the two examples given in the question, the goal is to round to the nearest 10, not nearest 5. Note that 245 should be rounded to 250. – rmaddy Jul 04 '18 at 17:53