How to convert string to currency without rounding up?

Question

I am using following code to convert string to US currency. However, I could not figure out how to disable round up.

For example, if the string value is "0.000012" code converts it to "$0.00".

The extension I am using it is from this SO answer:

The way I use:

print(Formatter.currency.locale)    // "en_US (current)\n"
print(priceUsdInt.currency)         // "$1.99\n"

`0.000012` rounded to 2 digits is `0.00`... so what is your question actually? — holex, Oct 24 '17 at 11:58
then please try reading the `NumberFormatter` [docs](https://developer.apple.com/documentation/foundation/numberformatter) first, focusing on the `usesSignificantDigits` and `minimumSignificantDigits` properties, perhaps...? — holex, Oct 24 '17 at 12:20

score 1 · Answer 1 · answered Oct 24 '17 at 12:02

1

0.000012 is should NOT convert to 0.01 , that would be wrong. If you want to set up a different format you can change the decimal points

String(format: "%0.3f", string)

answered Oct 24 '17 at 12:02

PoolHallJunkie

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Code converts it to "$0.00" not "0.01". I want to apply decimals into the existing code if possible. Thank you for the reply! – Vetuka Oct 24 '17 at 12:05

score 1 · Accepted Answer · answered Oct 24 '17 at 12:21

To control rounding (accept 6 digits after point in this case) add formatter.maximumFractionDigits = 6; to your Formatter extension

extension Formatter {
    static let currency = NumberFormatter(style: .currency)
    static let currencyUS: NumberFormatter = {
        let formatter = NumberFormatter(style: .currency)
        formatter.locale = Locale(identifier: "en_US")
        formatter.maximumFractionDigits = 6;
        return formatter
    }()
    static let currencyBR: NumberFormatter = {
        let formatter = NumberFormatter(style: .currency)
        formatter.locale = Locale(identifier: "pt_BR")
        formatter.maximumFractionDigits = 6;
        return formatter
    }()
}

How to convert string to currency without rounding up?

2 Answers2