Hello! I've installed GSL for use in Visual Studio Community 2017 following instructions of the blog https://solarianprogrammer.com/2020/01/26/getting-started-gsl-gnu-scientific -library-windows-macos-linux/.
I've decided to measure speed of calculations of internal complex numbers realization using template complex<double> (including header complex.h) and realization of complex numbers in GSL library. For this purpose I've calculated large vectors ( length 10000000) of some complex function (that is actually frequency dependence of graphene conductivity). I've used speed optimization /O2 and /DHAVE_INLINE compiler options. The calculation time of the vector using gsl_complex numbers was 7 s, while using internal complex<double> numbers took only 1s. Is it true that GSL complex numbers work slower than internal realization or maybe I've missed some optimization settings of GSL?
