interpolation
1. https://github.com/adrelino/interpolation-methods
2. https://github.com/ebertolazzi/Splines
3. https://github.com/chen0040/cpp-spline
4. https://github.com/CD3/libInterpolate
5. https://github.com/parsiad/mlinterp
interpolation
1. https://github.com/adrelino/interpolation-methods
2. https://github.com/ebertolazzi/Splines
3. https://github.com/chen0040/cpp-spline
4. https://github.com/CD3/libInterpolate
5. https://github.com/parsiad/mlinterp