Blaze is an open-source, high-performance C++ math library for dense and sparse arithmetic. With its state-of-the-art Smart Expression Template implementation Blaze combines the elegance and ease of use of a domain-specific language with HPC-grade performance, making it one of the most intuitive and fastest C++ math libraries available. The Blaze library offers: * high performance through the integration of BLAS libraries and manually tuned HPC math kernels * vectorization by SSE, SSE2, SSE3, SSSE3, SSE4, AVX, AVX2, AVX-512, FMA, and SVML * parallel execution by OpenMP, HPX, C++11 threads and Boost threads * the intuitive and easy to use API of a domain specific language * unified arithmetic with dense and sparse vectors and matrices * thoroughly tested matrix and vector arithmetic * completely portable, high quality C++ source code