The following C or C++ code, intended for use in a Python extension module, defines a function f that returns a NumPy array.
#include <Python.h>
#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
#include <numpy/arrayobject.h>
PyObject* f()
{
auto* dims = new npy_intp[2];
dims[0] = 3;
dims[1] = 4;
PyObject* pyarray = PyArray_SimpleNew(2, dims, NPY_DOUBLE);
double* array_buffer = (double*)PyArray_DATA((PyArrayObject*)pyarray);
for (size_t i = 0; i < dims[0]; ++i)
for (size_t j = 0; j < dims[1]; ++j)
array_buffer[j*dims[0]+i] = j+100+i;
delete[] dims;
return pyarray;
}
If the #define statement is removed, then the compiler (or preprocessor) raises a warning #warning "Using deprecated NumPy API, disable it with ...". How to modernize the above code? Or how to find the response in the NumPy documentation djungle?
