cimal will convert the floating-point number to a decimal text representation, and build a BigDecimal based on that. Three explicit schemes are available for conversion. When creating a BigDecimal from a Double or Float, care must be taken as the binary fraction representation of Double and Float does not easily convert into a decimal representation. Beyond that range–numbers with more than 4934 digits when written out in full–the hashCode of BigInt and BigDecimal is allowed to diverge due to difficulty in efficiently computing both the decimal representation in BigDecimal and the binary representation in BigInt. Within the range of IEEE binary128 numbers, BigDecimal will agree with BigInt for both equality and hash codes (and will agree with primitive types as well). By default, the precision approximately matches that of IEEE 128-bit floating point numbers (34 decimal digits, HALF_EVEN rounding mode). Issues/FeedbackFound a problem? Have an idea? File an issue on GitHub.BigDecimal represents decimal floating-point numbers of arbitrary precision. Separator between the number groupings when calling currency.format(). These values default to US centric currency values, but they can be overridden based on your locale. You can customize the formatting and parsing of currency.js with an optional options object. value // Get the internal valuesĬurrency( 123.45).add(. If you need access to the raw numbers, the value is stored as both an integer and a string, which you can access with. Sets the first input to the resolved currency value document.getElementsByTagName( "input").value = currency( 1234.56).add( 6.44) // 1241.00 This makes it easy to work into your UI without having to do string to number conversion or vice versa. As long as your currencies are less than 2 53 (in cents) or 90,071,992,547,409.91, you should not see any problems.Ĭurrency.js also works with a variety of strings. This should be okay for most reasonable values of currencies. Since currency.js handles values internally as integers, there is a limit to the precision that can be stored before encountering precision errors.
currency.js resolves this issue by working with integers behind the scenes, so you don't have to be concerned about decimal precision.įor more details on why Javascript has issues with floating point numbers, there's an excellent talk by Bartek Szopka on everything you never wanted to know about Javascript numbers explaining why Javascript and other IEEE 754 implementations have floating point issues.Ĭurrency.js will work with a range of inputs, including strings, numbers, decimals, or another currency object. When working with currencies, decimals only need to be precise up to the smallest cent value while avoiding common floating point errors when performing basic arithmetic. Currency.js was built to work around common floating point issues in javascript with a flexible api.
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