fn calculate_skips()

in crates/ratchet-core/src/cpu/gemm.rs [30:57]

• 28 lines of code
• 7 McCabe index (conditional complexity)

fn calculate_skips(
    lhs_shape: &Shape,
    lhs_strides: &[isize],
    rhs_shape: &Shape,
    rhs_strides: &[isize],
    rank: usize,
    m: usize,
    n: usize,
    k: usize,
) -> Result<(usize, usize)> {
    let lhs_skip: usize = match lhs_strides[..rank - 2] {
        [s1, stride] if s1 == stride * lhs_shape[1] as isize => stride as usize,
        [_, stride] if lhs_shape[0] == 1 => stride as usize,
        [stride, _] if lhs_shape[1] == 1 => stride as usize,
        [stride] => stride as usize,
        [] => m * k,
        _ => Err(anyhow!("non-contiguous lhs"))?,
    };
    let rhs_skip: usize = match rhs_strides[..rank - 2] {
        [s1, stride] if s1 == stride * rhs_shape[1] as isize => stride as usize,
        [_, stride] if rhs_shape[0] == 1 => stride as usize,
        [stride, _] if rhs_shape[1] == 1 => stride as usize,
        [stride] => stride as usize,
        [] => n * k,
        _ => Err(anyhow!("non-contiguous rhs"))?,
    };
    Ok((lhs_skip, rhs_skip))
}