How can I effectively convert multidimensional arrays to pointers for matrix inversion?

Challenges with Converting Multidimensional Arrays to Pointers for Matrix Inversion

In the realm of programming, the task of manipulating multidimensional arrays often requires strategic conversion to achieve desired outcomes. One such conversion, the transformation of multidimensional arrays into pointers, poses unique challenges when aiming to calculate matrix inverses.

When dealing with multidimensional arrays like double[4][4], the most straightforward approach to converting it to a pointer (double**) might not always yield the desired results. Here's what you need to know:

Unfortunately, a double[4][4] array is fundamentally incompatible with a double** pointer. They represent distinct approaches to implementing a 2D array. To make your existing double[4][4] array compatible with the matrix inversion function, a unique solution is required.

The solution lies in creating temporary "index" arrays of the type double *[4], where each pointer would point to the beginning of each row in the provided matrices. This allows you to pass these "index" arrays to your function instead of the original multidimensional arrays.

Here's an illustration:

<code class="cpp">double *startRows[4] = { startMatrix[0], startMatrix[1], startMatrix[2] , startMatrix[3] };
double *inverseRows[4] = { /* same thing here */ };</code>

Finally, pass these "index" arrays to the matrix inversion function:

<code class="cpp">MatrixInversion(startRows, 4, inverseRows);</code>

After the function completes its computations, you can safely disregard the startRows and inverseRows arrays as the results will be correctly stored in your original inverseMatrix array. This approach enables you to utilize an existing matrix inversion function designed for pointers with your multidimensional arrays.

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