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#[cfg(test)]
extern crate assert;
extern crate czt;
extern crate probability;
extern crate random;
pub mod gaussian;
pub trait Process {
type Index: Copy;
type State;
fn cov(&self, Self::Index, Self::Index) -> f64;
#[inline]
fn var(&self, index: Self::Index) -> f64 {
self.cov(index, index)
}
}
pub trait Stationary {
type Distance: Distance;
fn cov(&self, Self::Distance) -> f64;
#[inline]
fn var(&self) -> f64 {
self.cov(Self::Distance::zero())
}
}
pub trait Distance {
fn zero() -> Self;
}
impl Distance for usize {
#[inline(always)]
fn zero() -> usize {
0
}
}