1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
// Copyright 2018-2020 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::core::math::ArgminDot;
use crate::core::math::ArgminWeightedDot;

impl<T, U, V> ArgminWeightedDot<T, U, V> for T
where
    Self: ArgminDot<T, U>,
    V: ArgminDot<T, T>,
{
    #[inline]
    fn weighted_dot(&self, w: &V, v: &T) -> U {
        self.dot(&w.dot(v))
    }
}

#[cfg(test)]
mod tests_vec {
    use super::*;
    use paste::item;

    macro_rules! make_test {
        ($t:ty) => {
            item! {
                #[test]
                fn [<test_ $t>]() {
                    let a = vec![2 as $t, 1 as $t, 2 as $t];
                    let b = vec![1 as $t, 2 as $t, 1 as $t];
                    let w = vec![
                        vec![8 as $t, 1 as $t, 6 as $t],
                        vec![3 as $t, 5 as $t, 7 as $t],
                        vec![4 as $t, 9 as $t, 2 as $t],
                    ];
                    let res: $t = a.weighted_dot(&w, &b);
                    assert!((((res - 100 as $t) as f64).abs()) < std::f64::EPSILON);
                }
            }
        };
    }

    make_test!(i8);
    make_test!(u8);
    make_test!(i16);
    make_test!(u16);
    make_test!(i32);
    make_test!(u32);
    make_test!(i64);
    make_test!(u64);
    make_test!(f32);
    make_test!(f64);
}

#[cfg(feature = "ndarrayl")]
#[cfg(test)]
mod tests_ndarray {
    use super::*;
    use ndarray::array;
    use paste::item;

    macro_rules! make_test {
        ($t:ty) => {
            item! {
                #[test]
                fn [<test_ $t>]() {
                    let a = array![2 as $t, 1 as $t, 2 as $t];
                    let b = array![1 as $t, 2 as $t, 1 as $t];
                    let w = array![
                        [8 as $t, 1 as $t, 6 as $t],
                        [3 as $t, 5 as $t, 7 as $t],
                        [4 as $t, 9 as $t, 2 as $t],
                    ];
                    let res: $t = a.weighted_dot(&w, &b);
                    assert!((((res - 100 as $t) as f64).abs()) < std::f64::EPSILON);
                }
            }
        };
    }

    make_test!(i8);
    make_test!(u8);
    make_test!(i16);
    make_test!(u16);
    make_test!(i32);
    make_test!(u32);
    make_test!(i64);
    make_test!(u64);
    make_test!(f32);
    make_test!(f64);
}

#[cfg(feature = "nalgebral")]
#[cfg(test)]
mod tests_nalgebra {
    use super::*;
    use nalgebra::{Matrix3, Vector3};
    use paste::item;

    macro_rules! make_test {
        ($t:ty) => {
            item! {
                #[test]
                fn [<test_ $t>]() {
                    let a = Vector3::new(2 as $t, 1 as $t, 2 as $t);
                    let b = Vector3::new(1 as $t, 2 as $t, 1 as $t);
                    let w = Matrix3::new(
                        8 as $t, 1 as $t, 6 as $t,
                        3 as $t, 5 as $t, 7 as $t,
                        4 as $t, 9 as $t, 2 as $t,
                    );
                    let res: $t = a.weighted_dot(&w, &b);
                    assert!((((res - 100 as $t) as f64).abs()) < std::f64::EPSILON);
                }
            }
        };
    }

    make_test!(i8);
    make_test!(u8);
    make_test!(i16);
    make_test!(u16);
    make_test!(i32);
    make_test!(u32);
    make_test!(i64);
    make_test!(u64);
    make_test!(f32);
    make_test!(f64);
}