Function map3 

pub fn map3<A: Copy, B: Copy, C: Copy, U>(
    shape: &[usize],
    a: View<'_, A>,
    b: View<'_, B>,
    c: View<'_, C>,
    out: &mut [U],
    f: impl Fn(A, B, C) -> U,
)

Applies f element-wise: out[i] = f(a[i], b[i], c[i]) in row-major order of shape.

Panics

As map1.