libsparseir

Warning

This C++ project is still under construction. Please use other repositories:

• https://github.com/SpM-lab/sparse-ir
• https://github.com/SpM-lab/SparseIR.jl
• https://github.com/SpM-lab/sparse-ir-fortran

Description

This C++ library provides routines for constructing and working with the intermediate representation of correlation functions. It provides:

• on-the-fly computation of basis functions for arbitrary cutoff Λ
• basis functions and singular values are accurate to full precision
• routines for sparse sampling

We use tuwien-cms/libxprec as a double-double precision arithmetic library.

Building and Testing

Just run:

$ rm -rf ./build && cmake -S . -B ./build -DSPARSEIR_BUILD_TESTING=ON && cmake --build ./build -j && ./build/test/libsparseirtests