Hi, Sergey!

On 08.10.2024 16:25, Sergey Kaplun wrote:

<snipped>

+ffi.cdef[[
+  double sin(double, ...);
+  double cos(double, ...);

Why do you use sin/cos with wrong function prototypes if you can take

a function with varargs. (printf for example)?

I suppose this hack is well suited for our testing purposes:
1) We don't need to create custom vararg functions and the corresponding
   C libary.
2) Functions usage is obvious. Also, the vararg part will be silently
   ignored.

Be aware that we need the result of the function's call.

Got it. I would add this as a comment. Feel free to ignore.

LGTM