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Add regression test for #1072

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This commit is contained in:
YuhanLiin 2022-03-09 21:10:45 -05:00
parent 1acd48f6f1
commit a27d121a7a
1 changed files with 15 additions and 0 deletions
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15
tests/linalg/svd.rs
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@ -484,3 +484,18 @@ fn svd_regression_issue_983() {
epsilon = 1e-6 epsilon = 1e-6
); );
} }
#[test]
// Exercises bug reported in issue #1072 of nalgebra (https://github.com/dimforge/nalgebra/issues/1072)
fn svd_regression_issue_1072() {
let x = nalgebra::dmatrix![-6.206610118536945f64, -3.67612186839874; -1.2755730783423473, 6.047238193479124];
let mut x_svd = x.svd(true, true);
x_svd.singular_values = nalgebra::dvector![1.0, 0.0];
let y = x_svd.recompose().unwrap();
let y_svd = y.svd(true, true);
assert_relative_eq!(
y_svd.singular_values,
nalgebra::dvector![1.0, 0.0],
epsilon = 1e-9
);
}