Function mx_wrap 

#[unsafe(no_mangle)]
pub unsafe extern "C-unwind" fn mx_wrap(ptr: *mut mx_erased) -> SEXP

Wrap an erased object pointer in an R external pointer.

Registered as "mx_wrap" via R_RegisterCCallable.

Safety

ptr must point to a valid mx_erased allocated by a miniextendr constructor. Must be called on R’s main thread.