anyway, my attempt to merge up C with vhdl for testbench purposes has got some new progress

I am using gcc + gHDL because I am experimenting this solution in order to test a new algorithm which converges ( I hope) to the exponentiation of complex numbers

I has been studied on Mathematica, then ported to C, then moved from floatingpoint domain to fixedpoint domain (1), tuned (you have some significance loss issue), precision fixed, and finally moved from C to vhdl

but the testbench is still written in C, and I am interfacing it with the gHDL engine in order to test every blocks in the algorithm (e.g. the range-reduction block, the sign estimator block, the ReIm-network, etc etc)

this strategy is better than the attempt of porting those tests to vhdl: also with C-gHDL I can have "pipes" which interact with the linux underground, therefore I can also interface inputs and outputs with Octave/Matlab/Mathematica, which also means I have a better screenshots to show

(1) C++ offers the possibility to "overload" operators (+,-,*,/,%,=,>,<,>=,<=,!,...), so you can have a more comfortable fixedpoint engine which looks builtin the language and as good as the floatingpoint which comes really builtin and offered by the C language