Function for_each_inner_block_preordered 

pub fn for_each_inner_block_preordered<F>(
    dims: &[usize],
    blocks: &[usize],
    strides: &[Vec<isize>],
    initial_offsets: &[isize],
    f: F,
) -> Result<()>
where
    F: FnMut(&[isize], usize, &[isize]) -> Result<()>,

Iterate over blocks with pre-ordered dimensions and initial offsets.