message: Tests for ArgminSignum impls for Vec backend
diff: @@ -49,3 +49,58 @@ make_signum_complex!(Complex<i32>);
  make_signum_complex!(Complex<i64>);
  make_signum_complex!(Complex<f32>);
  make_signum_complex!(Complex<f64>);
  +
  +#[cfg(test)]
  +mod tests {
  + use super::*;
  + use paste::item;
  +
  + macro_rules! make_test {
  + ($t:ty) => {
  + item! {
  + #[test]
  + fn [<test_signum_complex_ $t>]() {
  + let x = vec![
  + Complex::new(1 as $t, 2 as $t),
  + Complex::new(4 as $t, -3 as $t),
  + Complex::new(-8 as $t, 4 as $t),
  + Complex::new(-8 as $t, -1 as $t),
  + ];
  + let y = vec![
  + Complex::new(1 as $t, 1 as $t),
  + Complex::new(1 as $t, -1 as $t),
  + Complex::new(-1 as $t, 1 as $t),
  + Complex::new(-1 as $t, -1 as $t),
  + ];
  + let res = <Vec<Complex<$t>> as ArgminSignum>::signum(x);
  + for i in 0..4 {
  + let tmp = y[i] - res[i];
  + let norm = ((tmp.re * tmp.re + tmp.im * tmp.im) as f64).sqrt();
  + assert!(norm < std::f64::EPSILON);
  + }
  + }
  + }
  +
  + item! {
  + #[test]
  + fn [<test_signum_ $t>]() {
  + let x = vec![1 as $t, -4 as $t, 8 as $t];
  + let y = vec![1 as $t, -1 as $t, 1 as $t];
  + let res = <Vec<$t> as ArgminSignum>::signum(x);
  + for i in 0..3 {
  + let diff = (y[i] - res[i]).abs() as f64;
  + assert!(diff < std::f64::EPSILON);
  + }
  + }
  + }
  + };
  + }
  +
  + make_test!(isize);
  + make_test!(i8);
  + make_test!(i16);
  + make_test!(i32);
  + make_test!(i64);
  + make_test!(f32);
  + make_test!(f64);
  +}
  