1#[cfg(not(feature = "blas"))]
2use linfa_linalg::LinalgError;
3#[cfg(feature = "blas")]
4use ndarray_linalg::error::LinalgError;
5use thiserror::Error;
6pub type Result<T> = std::result::Result<T, PlsError>;
7
8#[derive(Error, Debug)]
9pub enum PlsError {
10 #[error("Number of samples should be greater than 1, got {0}")]
11 NotEnoughSamplesError(usize),
12 #[error("Number of components should be in [1, {upperbound}], got {actual}")]
13 BadComponentNumberError { upperbound: usize, actual: usize },
14 #[error("The tolerance is should not be negative, NaN or inf but is {0}")]
15 InvalidTolerance(f32),
16 #[error("The maximal number of iterations should be positive")]
17 ZeroMaxIter,
18 #[error("Singular vector computation power method: max iterations ({0}) reached")]
19 PowerMethodNotConvergedError(usize),
20 #[error("Constant residual detected in power method")]
21 PowerMethodConstantResidualError(),
22 #[error(transparent)]
23 LinalgError(#[from] LinalgError),
24 #[error(transparent)]
25 LinfaError(#[from] linfa::error::Error),
26 #[error(transparent)]
27 MinMaxError(#[from] ndarray_stats::errors::MinMaxError),
28}