Function get_array_memory_extents

numpy/core/src/common/mem_overlap.c:693–710

Gets a half-open range [start, end) which contains the array data */

/* Gets a half-open range [start, end) which contains the array data */
static void
get_array_memory_extents(PyArrayObject *arr,
                         npy_uintp *out_start, npy_uintp *out_end,
                         npy_uintp *num_bytes)
{
    npy_intp low, upper;
    int j;
    offset_bounds_from_strides(PyArray_ITEMSIZE(arr), PyArray_NDIM(arr),
                               PyArray_DIMS(arr), PyArray_STRIDES(arr),
                               &low, &upper);
    *out_start = (npy_uintp)PyArray_DATA(arr) + (npy_uintp)low;
    *out_end = (npy_uintp)PyArray_DATA(arr) + (npy_uintp)upper;

    *num_bytes = PyArray_ITEMSIZE(arr);
    for (j = 0; j < PyArray_NDIM(arr); ++j) {
        *num_bytes *= PyArray_DIM(arr, j);
    }
}


static int