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decimal.js is a JavaScript library that provides an arbitrary-precision decimal data type designed to overcome the limitations of native floating-point arithmetic in JavaScript. It allows developers to perform accurate calculations with numbers of virtually unlimited precision, making it especially useful for financial, scientific, and high-precision applications. Unlike standard JavaScript numbers, which can produce rounding errors due to binary representation, decimal.js ensures consistent and predictable results by operating on decimal values directly. The library defines a Decimal constructor that accepts numbers, strings, or existing Decimal instances, enabling flexible usage across different input types. It supports a wide range of mathematical operations, including arithmetic, logarithmic, trigonometric, and exponential functions, making it significantly more comprehensive than simpler numeric libraries.
Features
- Arbitrary-precision decimal arithmetic for accurate calculations
- Configurable precision using significant digits
- Support for advanced math functions including trigonometry and logarithms
- Flexible input handling with numbers, strings, and Decimal instances
- Consistent rounding behavior across all operations
- Lightweight single-file or module-based integration
Project Samples
