Wigcpp is a wigner-3j, 6j and 9j symbol calculation library which is written in C++ 17.
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Updated
Dec 24, 2025 - C++
Wigcpp is a wigner-3j, 6j and 9j symbol calculation library which is written in C++ 17.
This project computes the Clebsch-Gordan coefficients for two input spin values, using symbolic math to maintain exact fractional results.
|JM> class: quantum numbers and F=I+J
A port of Fortran code that calculates Clebsch-Gordan coefficients
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