Decimal-Java is a library to convert java.math.BigDecimal to and from IEEE-754r

It seems like a niche problem, but there are situations where you might need to convert Java’s BigDecimal type to an IEEE-754 floating point number and back again. This is precisely what the Decimal-Java library is designed to do. It provides a set of utility classes that allow developers to easily convert between these two data types. The library includes methods for converting BigDecimal instances to and from 32-bit and 64-bit IEEE-754 floats, as well as support for handling NaN (Not-a-Number) values.

Source: Hacker News: Front Page

Author: mariuz


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Hey guys, so I’ve been using this Decimal-Java library for a bit and it’s honestly been super helpful for my projects. But what got me thinking was how often we’re converting back and forth between BigDecimal and IEEE floats in the city never sleeps (I mean, have you seen those financial models they do on Wall Street?). It just seems like such an odd niche problem to be solving over and over again… but I guess that’s why libraries exist. At any rate, does anyone else use this library or know of other alternatives? And what are your experiences with it so far?