Struct FresnelResidual 

pub struct FresnelResidual {
    ks: [[Complex; 2]; 2],
    kzs: [[Complex; 2]; 2],
    zs: [Complex; 2],
}

What fresnel saves for its pullback: the wavenumbers, the normal wavenumbers and the impedances. The pullback differentiates the closed forms again instead of keeping a Jacobian.

Fields

ks: [[Complex; 2]; 2]

kzs: [[Complex; 2]; 2]

zs: [Complex; 2]

Implementations

impl FresnelResidual

pub fn state_size() -> Result<usize>

Byte length of one Fresnel derivative state.

impl FresnelResidual

pub fn pushforward( &self, ks: [[Complex; 2]; 2], kz: [[Complex; 2]; 2], z: [Complex; 2], ) -> Result<Blocks>

Propagate one joint wavenumber, normal-wavenumber and impedance direction.

pub fn pullback(&self, cotangent: &Blocks) -> Result<FresnelGradient>

The gradients of all ten complex inputs under the real pairing Re Σ conj(g)·dx.

Trait Implementations

impl Debug for FresnelResidual

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

Formats the value using the given formatter.

impl SavedState for FresnelResidual

fn save_state(&self) -> Result<Vec<u8>>

Copy the saved numerical state into its fixed byte layout.

fn from_state(bytes: &[u8]) -> Result<Self>

Restore numerical state from bytes produced by this extension.