1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21

use core::fmt::{Display, Formatter};

#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum Error {
  /// Used by div
  DivisionByZero,
  /// Used by sqrt
  NumberIsNegative,
}

impl Display for Error {
  fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), core::fmt::Error> {
    match self {
      Error::DivisionByZero => f.write_str("Division by zero"),
      Error::NumberIsNegative => f.write_str("Number is negative"),
    }
  }
}

#[cfg(any(doc, feature = "std"))]
impl std::error::Error for Error {}