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Add method signDeterminant() to QR and related decompositions.

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This commit is contained in:
Rasmus Munk Larsen
2024-02-20 23:44:28 +00:00
parent db6b9db33b
commit 3859e8d5b2
7 changed files with 138 additions and 7 deletions
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3
test/qr.cpp
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@@ -82,6 +82,7 @@ void qr_invertible() {
m1 = m3 * m1 * m3.adjoint();
qr.compute(m1);
VERIFY_IS_APPROX(log(absdet), qr.logAbsDeterminant());
VERIFY_IS_APPROX(numext::sign(det), qr.signDeterminant());
// This test is tricky if the determinant becomes too small.
// Since we generate random numbers with magnitude range [0,1], the average determinant is 0.5^size
RealScalar tol =
@@ -102,7 +103,7 @@ void qr_verify_assert() {
VERIFY_RAISES_ASSERT(qr.householderQ())
VERIFY_RAISES_ASSERT(qr.determinant())
VERIFY_RAISES_ASSERT(qr.absDeterminant())
VERIFY_RAISES_ASSERT(qr.logAbsDeterminant())
VERIFY_RAISES_ASSERT(qr.signDeterminant())
}
EIGEN_DECLARE_TEST(qr) {