argmin-math 0.5.1

argmin math abstractions
Documentation 
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use crate::faer_tests::test_helper::*;
use crate::ArgminZeroLike;
use approx::assert_relative_eq;
use faer::mat;
use faer::Mat;
use paste::item;

macro_rules! make_test {
    ($t:ty) => {
        item! {
            #[test]
            fn [<test_zero_like_ $t>]() {
                let t: Mat<$t> = column_vector_from_vec::<$t>(vec![]);
                let a = t.zero_like();
                assert_eq!(t, a);
            }
        }

        item! {
            #[test]
            fn [<test_zero_like_2_ $t>]() {
                let a = column_vector_from_vec(vec![42 as $t, 42 as $t, 42 as $t, 42 as $t]).zero_like();
                for i in 0..4 {
                    assert_relative_eq!(0 as f64, a[(i,0)] as f64, epsilon = f64::EPSILON);
                }
            }
        }

        item! {
            #[test]
            fn [<test_2d_zero_like_ $t>]() {
                let t: Mat<$t> = column_vector_from_vec(vec![0 as $t ,0 as $t]);
                let a = t.zero_like();
                assert_eq!(t, a);
            }
        }

        item! {
            #[test]
            fn [<test_2d_zero_like_2_ $t>]() {
                let a = mat![
                  [42 as $t, 42 as $t],
                  [42 as $t, 42 as $t]
                ].zero_like();

                for i in 0..2 {
                    for j in 0..2 {
                        assert_relative_eq!(0 as f64, a[(i, j)] as f64, epsilon = f64::EPSILON);
                    }
                }
            }
        }
    };
}

//@note(geo-ant): partial equality does not work for integral types in faer
// which is why we implement the tests for floating point numbers only
make_test!(f32);
make_test!(f64);