Struct Plan 

pub struct Plan<T: Float> { /* private fields */ }

A plan for executing FFT transforms.

Plans are created once and can be executed multiple times. The planning process may measure different algorithms to find the fastest.

Implementations

impl<T: Float> Plan<T>

pub fn dft_1d(n: usize, direction: Direction, flags: Flags) -> Option<Self>

Create a 1D complex-to-complex DFT plan.

Arguments

• n - Transform size
• direction - Forward or Backward transform
• flags - Planning flags (ESTIMATE, MEASURE, PATIENT, EXHAUSTIVE)

Returns

A plan that can be executed on input/output buffers of size n.

pub fn dft_2d( n0: usize, n1: usize, direction: Direction, flags: Flags, ) -> Option<Plan2D<T>>

Create a 2D complex-to-complex DFT plan.

pub fn dft_3d( n0: usize, n1: usize, n2: usize, direction: Direction, flags: Flags, ) -> Option<Plan3D<T>>

Create a 3D complex-to-complex DFT plan.

pub fn r2c_1d(n: usize, flags: Flags) -> Option<RealPlan<T>>

Create a 1D real-to-complex FFT plan.

pub fn c2r_1d(n: usize, flags: Flags) -> Option<RealPlan<T>>

Create a 1D complex-to-real FFT plan.

pub fn size(&self) -> usize

Get the transform size.

pub fn direction(&self) -> Direction

Get the transform direction.

pub fn execute(&self, input: &[Complex<T>], output: &mut [Complex<T>])

Execute the plan on the given input/output buffers.

Panics

Panics if input or output buffer sizes don’t match the plan size.

pub fn execute_inplace(&self, data: &mut [Complex<T>])

Execute the plan in-place.

Panics

Panics if buffer size doesn’t match the plan size.

Trait Implementations

impl<T: Float> Debug for Plan<T>

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

Formats the value using the given formatter.