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use crate::{matrix::Matrix, number::c64};

impl Matrix<f64> {
    /// # Pow integer
    /// for diagonal matrix
    pub fn dipowi(self, exp: i32) -> Self {
        let n = self.rows;
        let mut slf = self;

        for i in 0..n {
            slf[i][i] = slf[i][i].powi(exp);
        }

        slf
    }
}

impl Matrix<c64> {
    /// # Pow integer
    /// for diagonal matrix
    pub fn dipowi(self, exp: i32) -> Self {
        let n = self.rows;
        let mut slf = self;

        for i in 0..n {
            slf[i][i] = slf[i][i].powi(exp);
        }

        slf
    }
}

#[cfg(test)]
mod tests {
    use crate::prelude::*;
    #[test]
    fn it_works() {
        let a = Matrix::<f64>::identity(2);
        let a_inv = a.clone().diinv();

        assert_eq!(a[0][0], a_inv[0][0]);

        let a = Matrix::<c64>::identity(2);
        let a_inv = a.clone().diinv();

        assert_eq!(a[0][0], a_inv[0][0]);
    }
}