What is the method of invoking in-class functions in C++ (which have float pointers as arguments) in Python using pybind11?

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To invoke in-class functions in C++ that have float pointers as arguments in Python using pybind11, you need to define the function signature using pybind11 syntax and then bind the C++ function to the Python module. Here's an example:

Assuming you have a C++ class with a function that takes a float pointer as an argument:

class MyClass {
public:
    void my_function(float* input) {
        // do some operation with the input
    }
};

To bind this function to Python using pybind11, you can define the function signature using pybind11 syntax:

#include <pybind11/pybind11.h>
#include <pybind11/stl.h>

namespace py = pybind11;

class MyClass {
public:
    void my_function(float* input) {
        // do some operation with the input
    }
};

PYBIND11_MODULE(my_module, m) {
    py::class_<MyClass>(m, "MyClass")
        .def("my_function", &MyClass::my_function, py::arg("input"));
}

Here, we have defined a Python module "mymodule" and a "MyClass" C++ class which we want to expose to Python. Using the py::class_ template, we define the class and def method to bind the class method "myfunction" to the Python module. Here, py::arg is used to specify the argument name.

Now, we can use this Python module to invoke the my_function method:

import my_module

obj = my_module.MyClass()
data = [1.0, 2.0, 3.0]
ptr = my_module.float_pointer(data)
obj.my_function(ptr)

Here, we create an instance of the MyClass class, and provide a Python list of floats as input to the my_function method. Using pybind11, the list is automatically converted to a C++ float pointer and passed as an argument to the C++ function.