Struct WignerDResidual 

pub struct WignerDResidual {
    labels: Vec<[i32; 3]>,
    angles: [Vec<Complex>; 3],
    size: usize,
}

What wigner_d_array saves for its pullback: the labels and the Euler angles. The pullback applies the local chain rules.

Fields

labels: Vec<[i32; 3]>

angles: [Vec<Complex>; 3]

size: usize

Implementations

impl WignerDResidual

pub fn new(labels: Vec<[i32; 3]>, angles: [Vec<Complex>; 3]) -> Result<Self>

Keep the broadcast inputs needed by derivatives without evaluating values.

fn element(&self, i: usize) -> ([i32; 3], [Complex; 3])

pub fn pushforward(&self, tangents: [&[Complex]; 3]) -> Result<Vec<Complex>>

Apply one direction in the Euler angles, carrying one jet slot per value.

pub fn pullback(&self, cotangent: &[Complex]) -> Result<[Vec<Complex>; 3]>

The gradients with respect to the three Euler angles, given the gradient cotangent with respect to the values. An angle given as one value for all elements receives the sum of its element gradients.

Trait Implementations

impl Debug for WignerDResidual

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.