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Vendor scruoge
Package lib-fractions
Short Description Library for precision math calculations based on natural fractions (operates on rational domain)
License MIT

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Informations about the package lib-fractions

lib-fractions

A PHP library for precision mathematical calculations using rational numbers. This library operates on the rational domain, providing exact decimal representation without the precision loss inherent in floating-point arithmetic.

Features

Exact Precision: No floating-point rounding errors
Rational Number Arithmetic: Operations on fractions with significand, denominator, and exponent
Multiple Input Formats: Create rational numbers from integers, floats, or explicit fraction components
JSON Serializable: Easy integration with APIs and data storage
Comprehensive Operations: Addition, subtraction, multiplication, division, and comparison
Flexible Rounding: Configurable rounding modes when converting from floats

Installation

Install via Composer:

Requirements

PHP 8.0 or higher

Quick Start

API Reference

Constructor Methods

`create(int $significand, int $exponent = 0, int $denominator = 1): RationalExp`

Creates a rational number with explicit components.

`fromNumber(int|float $number, int $digits = -1, int $roundMode = PHP_ROUND_HALF_UP): RationalExp`

Creates a rational number from an integer or float.

`zero(): RationalExp` and `one(): RationalExp`

Convenience methods for common values.

Arithmetic Operations

All arithmetic operations return a new RationalExp instance:

Utility Methods

`equals(RationalExp $that): bool`

Checks if two rational numbers are equal.

`toFloat(): float`

Converts the rational number to a float (may lose precision).

`jsonSerialize(): array`

Serializes the rational number for JSON encoding.

Advanced Usage

Working with Fractions

Precision Control

When converting from floats, you can control precision and rounding:

Financial Calculations

Perfect for monetary calculations where precision is crucial:

Development

Setup

Clone the repository and install dependencies:

Running Tests

Code Style

This project uses PHP-CS-Fixer for code formatting:

Project Structure

Use Cases

This library is particularly useful for:

Financial applications where exact decimal representation is required
Scientific calculations requiring rational number precision
Data processing where floating-point errors must be avoided
Mathematical applications working with fractions and ratios

Contributing

Fork the repository
Create a feature branch (git checkout -b feature/amazing-feature)
Make your changes
Run tests (composer test)
Fix code style (composer cs-fix)
Commit your changes (git commit -m 'Add amazing feature')
Push to the branch (git push origin feature/amazing-feature)
Open a Pull Request

Please ensure all tests pass and follow the existing code style.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Author

Sergey N. Kruk - [email protected]

For more examples and detailed documentation, please refer to the test files in the test/ directory.

All versions of lib-fractions with dependencies

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Package Version

Version 1.0.0 Release 03. Dec 2025
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