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// Copyright 2018-2024 argmin developers
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.

use crate::{ArgminZero, ArgminZeroLike};
use num_traits::Zero;

impl<T> ArgminZeroLike for ndarray::Array1<T>
where
    T: Zero + ArgminZero + Clone,
{
    #[inline]
    fn zero_like(&self) -> ndarray::Array1<T> {
        ndarray::Array1::zeros(self.raw_dim())
    }

    // #[inline]
    // fn zero() -> ndarray::Array1<T> {
    //     ndarray::Array1::zeros(0)
    // }
}

impl<T> ArgminZeroLike for ndarray::Array2<T>
where
    T: Zero + ArgminZero + Clone,
{
    #[inline]
    fn zero_like(&self) -> ndarray::Array2<T> {
        ndarray::Array2::zeros(self.raw_dim())
    }

    // #[inline]
    // fn zero() -> ndarray::Array2<T> {
    //     ndarray::Array2::zeros((0, 0))
    // }
}

// All code that does not depend on a linked ndarray-linalg backend can still be tested as normal.
// To avoid dublicating tests and to allow convenient testing of functionality that does not need ndarray-linalg the tests are still included here.
// The tests expect the name for the crate containing the tested functions to be argmin_math
#[cfg(test)]
use crate as argmin_math;
include!(concat!(
    env!("CARGO_MANIFEST_DIR"),
    "/ndarray-tests-src/zero.rs"
));