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Add comment about the origin of the failing 3x3 SVD matrix

This commit is contained in:
Sébastien Crozet 2021-12-09 13:31:39 +01:00
parent 229c137756
commit 412104fa0a
1 changed files with 3 additions and 0 deletions
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3
tests/linalg/svd.rs
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@ -364,6 +364,9 @@ fn svd_fail() {
#[test] #[test]
#[rustfmt::skip] #[rustfmt::skip]
fn svd3_fail() { fn svd3_fail() {
// NOTE: this matrix fails the special case done for 3x3 SVDs.
// It was found on an actual application using SVD as part of the minimization of a
// quadratic error function.
let m = nalgebra::matrix![ let m = nalgebra::matrix![
0.0, 1.0, 0.0; 0.0, 1.0, 0.0;
0.0, 1.7320508075688772, 0.0; 0.0, 1.7320508075688772, 0.0;