Enum SizeClass 

pub enum SizeClass {
    Notw(usize),
    Odd(usize),
    RaderHardcoded(usize),
    MixedRadix(Vec<u16>),
    RaderPrime(usize),
    Bluestein(usize),
}

Classification of an FFT size for codelet routing.

Variants

Notw(usize)

Handled by the non-twiddle emitter: {2, 4, 8, 16, 32, 64}. Also used for N=1 (identity, emitted directly).

Odd(usize)

Handled by the Winograd odd emitter: {3, 5, 7}.

RaderHardcoded(usize)

Handled by the hardcoded Rader emitter (straight-line twiddles): {11, 13}.

MixedRadix(Vec<u16>)

Smooth-7 composite (all prime factors in {2, 3, 5, 7}): routed to the runtime Plan::dft_1d mixed-radix path.

RaderPrime(usize)

Small prime <= 1021 not in the hardcoded set: routed to Plan::dft_1d (which selects Winograd, Direct, or Generic internally).

Bluestein(usize)

All other sizes: routed to Plan::dft_1d (Bluestein or Generic path).

Trait Implementations

impl Clone for SizeClass

fn clone(&self) -> SizeClass

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SizeClass

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

Formats the value using the given formatter.

impl PartialEq for SizeClass

fn eq(&self, other: &SizeClass) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for SizeClass

impl StructuralPartialEq for SizeClass