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This repository contains single-header libraries from the Magnum engine.

Join the chat at Build Status MIT License


There are the following single-header libraries at the moment. This list will grow with more Magnum features being exposed this way.

Library LoC PpLoC[1] Description
CorradeArrayView.h 705 2648 Containers::ArrayView and Containers::StaticArrayView, lightweight alternatives to std::span
CorradeStridedArrayView.h 911[2] 3245 Containers::StridedArrayView, multi-dimensional strided array view. Depends on CorradeArrayView.h.
CorradeArray.h 754[2] 3530 Containers::Array and Containers::StaticArray, lightweight alternatives to std::vector and std::array. Depends on CorradeArrayView.h.
CorradeOptional.h 358 2883 Containers::Optional, a lightweight alternative to std::optional
CorradePointer.h 273 2457 Containers::Pointer, a lightweight alternative to std::unique_ptr
CorradeReference.h 115 1764 Containers::Reference, a lightweight alternative to std::reference_wrapper
CorradeScopeGuard.h 131 34 Containers::ScopeGuard, a lightweight alternative to std::unique_ptr with a custom deleter
CorradeStlForwardArray.h 67 2471[3] Corrade's forward declaration for std::array, a lightweight alternative to the full <array> (15k PpLOC[1]) where supported
CorradeStlForwardString.h 74 48 Corrade's forward declaration for std::string, a lightweight alternative to the full <string> (11k PpLOC[1]) where supported
CorradeStlForwardTuple.h 78 1739 Corrade's forward declaration for std::tuple, a lightweight alternative to the full <tuple> (13k PpLOC[1]) where supported
CorradeStlForwardVector.h 62 783[3] Corrade's forward declaration for std::vector, a lightweight alternative to the full <vector> (9k PpLOC[1]) where supported
CorradeStlMath.h 57 3015[4] Corrade's optimized <cmath>, without the heavy C++17 additions (which is otherwise 11k PpLOC[4])
MagnumMath.hpp 7748 9946 Math namespace, a full-featured graphics-oriented linear algebra library

[1] — lines of code after a preprocessor run, with system includes expanded. Gathered using GCC 10.1 and libstdc++, unless said otherwise.

[2] — not a total size due to inter-library dependencies

[3] — gathered using Clang 10.0 and libc++, since libstdc++ doesn't have a forward declaration for std::array / std::vector

[4] — gathered using GCC 10.1, libstdc++ and -std=c++17

Where is the documentation?

Single-header libraries provided here are generated from multi-file sources in the Magnum project. This is done for two reasons — first, documentation and test coverage is much easier to maintain in the setting of a bigger project, avoiding any redundancy or duplicated efforts. Second, because the resulting files are generated with non-essential parts stripped away, there's no need to worry about bloating them due to original implementations having extensive documentation or rarely used features.

With the goal being easy integration, the files are deliberately free of all comments and documentation blocks to keep their size small. Documentation for each library is provided in the official Magnum documentation, linked from the table above. Each library file contains the same documentation link, together with a concrete Git revision it was generated from a changelog for a few versions back for easier overview when updating.

For more information read the single-header library docs. The libraries are generated using, which is a part of Corrade. See its documentation, if you are interested. Particular libraries are introduced on the Magnum blog:

What about test coverage?

Testing done in this repository is mainly to ensure the libraries are generated correctly. Extensive testing on variety of compilers and OSes with > 99% test coverage is done in the Magnum Project itself. See the Build Status page for more information.

Reporting bugs and contributing

As always, bug reports, feature requests and code contributions are very welcome. However again please note the files in this repository are generated from original sources in the corrade and magnum repositories, meaning that ideally all PRs should go there instead, as there's a better infrastructure for documentation and testing. We don't enforce this rule though — if you have an important bugfix, it's better if you submit it here than not at all 😉


All libraries are tested on these platforms:

And on these compilers:

  • GCC 4.8.1 and newer (and equivalent MinGW-w64 version)
  • Clang 3.3 and newer (and equivalent AppleClang version), both libstdc++ and libc++
  • MSVC 2015 and newer


See also the Magnum Project Contact & Support page for further information.


Libraries presented here are a result of a dedicated work by many community members. List of all contributors to the Magnum Project can be found in the documentation.


Magnum is licensed under the MIT/Expat license, see the COPYING file for details.