use std::fmt;
use std::sync::Arc;

#[derive(Debug)]
pub enum LlsError {
    SingularMatrix,
}

impl std::error::Error for LlsError {}

#[derive(Debug, Clone, PartialEq, Eq)]
pub enum InversionError {
    SingularMatrix,
    EmptyMatrix,
}

impl fmt::Display for LlsError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            LlsError::SingularMatrix => write!(f, "Matrix is singular and cannot be inverted."),
        }
    }
}

impl fmt::Display for InversionError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            InversionError::SingularMatrix => {
                write!(f, "Matrix is singular and cannot be inverted.")
            }
            InversionError::EmptyMatrix => write!(f, "Matrix is empty and cannot be inverted."),
        }
    }
}

impl std::error::Error for InversionError {}