# QuantLib: the free/open-source library for quantitative finance [![Download](https://img.shields.io/github/v/release/lballabio/QuantLib?label=Download&sort=semver)](https://github.com/lballabio/QuantLib/releases/latest) [![Licensed under the BSD 3-Clause License](https://img.shields.io/badge/License-BSD--3--Clause-blue.svg)](https://github.com/lballabio/QuantLib/blob/master/LICENSE.TXT) [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.1440997.svg)](https://doi.org/10.5281/zenodo.1440997) [![PRs Welcome](https://img.shields.io/badge/PRs%20-welcome-brightgreen.svg)](https://github.com/lballabio/QuantLib/blob/master/CONTRIBUTING.md) [![Linux build status](https://github.com/lballabio/QuantLib/workflows/Linux%20build/badge.svg?branch=master)](https://github.com/lballabio/QuantLib/actions?query=workflow%3A%22Linux+build%22) [![Windows build status](https://ci.appveyor.com/api/projects/status/bmpiucu74eldfkm0/branch/master?svg=true)](https://ci.appveyor.com/project/lballabio/quantlib/branch/master) [![Mac OS build status](https://github.com/lballabio/QuantLib/workflows/Mac%20OS%20build/badge.svg?branch=master)](https://github.com/lballabio/QuantLib/actions?query=workflow%3A%22Mac+OS+build%22) [![CMake build status](https://github.com/lballabio/QuantLib/workflows/CMake%20build/badge.svg?branch=master)](https://github.com/lballabio/QuantLib/actions?query=workflow%3A%22CMake+build%22) [![Codacy Badge](https://app.codacy.com/project/badge/Grade/b4bc1058db994f24aa931b119a885eea)](https://www.codacy.com/gh/lballabio/QuantLib/dashboard) [![Code Quality: Cpp](https://img.shields.io/lgtm/grade/cpp/g/lballabio/QuantLib.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/lballabio/QuantLib/context:cpp) [![Coverage Status](https://coveralls.io/repos/github/lballabio/QuantLib/badge.svg?branch=master)](https://coveralls.io/github/lballabio/QuantLib?branch=master) --- The QuantLib project (<https://www.quantlib.org>) is aimed at providing a comprehensive software framework for quantitative finance. QuantLib is a free/open-source library for modeling, trading, and risk management in real-life. QuantLib is Non-Copylefted Free Software and OSI Certified Open Source Software. ## Download and usage QuantLib can be downloaded from <https://www.quantlib.org/download.shtml>; installation instructions are available at <https://www.quantlib.org/install.shtml> for most platforms. Documentation for the usage and the design of the QuantLib library is available from <https://www.quantlib.org/docs.shtml>. A list of changes for each past versions of the library can be browsed at <https://www.quantlib.org/reference/history.html>. ## Questions and feedback The preferred channel for questions (and the one with the largest audience) is the quantlib-users mailing list. Instructions for subscribing are at <https://www.quantlib.org/mailinglists.shtml>. Bugs can be reported as a GitHub issue at <https://github.com/lballabio/QuantLib/issues>; if you have a patch available, you can open a pull request instead (see "Contributing" below). ## Contributing Contributions are very welcome! Details are in [CONTRIBUTING.md](https://github.com/lballabio/QuantLib/blob/master/CONTRIBUTING.md)
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