Struct ndrustfft::DctHandler
source · [−]pub struct DctHandler<T> { /* private fields */ }
Expand description
n-dimensional real-to-real Cosine Transform.
The dct transforms a real ndarray of size n to a real array of size n. The transformation is performed along a single axis, all other array dimensions are unaffected. Performs best on sizes where 2(n-1) is a mutiple of 2 or 3. The crate contains benchmarks, see benches folder, where different sizes can be tested to optmize performance.
The accompanying functions are nddct1
(serial) and
nddct1_par
(parallel).
Example
2-Dimensional real-to-real dft along second axis
use ndarray::Array2;
use ndrustfft::{DctHandler, nddct1};
let (nx, ny) = (6, 4);
let mut data = Array2::<f64>::zeros((nx, ny));
let mut vhat = Array2::<f64>::zeros((nx, ny));
for (i, v) in data.iter_mut().enumerate() {
*v = i as f64;
}
let mut handler: DctHandler<f64> = DctHandler::new(ny);
nddct1(&data, &mut vhat, &mut handler, 1);
Implementations
sourceimpl<T: FftNum + FloatConst> DctHandler<T>
impl<T: FftNum + FloatConst> DctHandler<T>
Trait Implementations
sourceimpl<T: Clone> Clone for DctHandler<T>
impl<T: Clone> Clone for DctHandler<T>
sourcefn clone(&self) -> DctHandler<T>
fn clone(&self) -> DctHandler<T>
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
Auto Trait Implementations
impl<T> !RefUnwindSafe for DctHandler<T>
impl<T> Send for DctHandler<T>
impl<T> Sync for DctHandler<T>
impl<T> Unpin for DctHandler<T>
impl<T> !UnwindSafe for DctHandler<T>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Pointable for T
impl<T> Pointable for T
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more