Build process fails on MacOS

[wbenoot]

Host OS: macOS Ventura 13.4
Compiler: AppleClang 14.0.3

The build process fails at pi2_bpsk.cc due to

error: implicit conversion from '_Complex double' to 'float' is not permitted in C++

Regarding the following lines:

Line 26: (SQRT2_2 + SQRT2_2i), // bit 0
Line 27: (-SQRT2_2 - SQRT2_2i) // bit 1
Line 32: (-SQRT2_2 + SQRT2_2i), // bit 0
Line 33: (SQRT2_2 - SQRT2_2i) // bit 1
Line 58: (SQRT2_2 - SQRT2_2i), // rotation factor for even indexes
Line 59: (-SQRT2_2 - SQRT2_2i) // rotation factor for odd indexes
Line 185: (SQRT2_2 - SQRT2_2i), // rotation factor for even indexes
Line 186: (-SQRT2_2 - SQRT2_2i) // rotation factor for odd indexes

[wbenoot]

Managed to get passed this error by using gcc-13 instead of the default compiler, did not find a way to fix the casting to build using AppleClang

[wbenoot]

Fixed all my compilation issues in: #28