如何使用指针将numpy数组传递给C ++ / SWIG而不依赖于numpy.i？

Question

Is there a way to pass a numpy array into C++/SWIG by just using a pointer to the first element? I have a C++ function that anticipates a 3-by-N matrix, which is expected to be stored in column-major indexed contiguous memory. Therefore, the function call takes the following parameters:

( double *mat3Xin, double *mat3Xout, int numTrip)

where numTrip is the N dimension of the matrix (ie number of triplets). Since the input and inplace output is the same size, I do not require that to be passed in. Is there a way to easily handle this in SWIG without using swig's renaming inline feature and creating a helper function which accepts the additional parameters swig's numpy interface requires for matrices? I'm currently raveling the matrices in a helper function which then calls a renamed version of the original function, however, it is starting to get tedious to convert all the functions in my existing library to this form.

Thanks,

Answer 1

也许这是不可能的，我坚持使用这些函数的手写界面： http ： //docs.scipy.org/doc/numpy/reference/swig.interface-file.html#a-common-example