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lapack/testlapack: add test for randomOrthogonal

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... and remove the orthogonality assertion in randomOrthogonal.
This commit is contained in:
Vladimir Chalupecky
2018-07-23 11:49:36 +02:00
committed by Vladimír Chalupecký
parent 99b6f69bff
commit ac556fa015
2 changed files with 10 additions and 3 deletions
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3
lapack/testlapack/matgen.go
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@@ -675,9 +675,6 @@ func randomOrthogonal(n int, rnd *rand.Rand) blas64.General {
// Compute Q * H_j and store the result into Q. // Compute Q * H_j and store the result into Q.
applyReflector(q, q, v) applyReflector(q, q, v)
} }
if !isOrthogonal(q) {
panic("Q not orthogonal")
}
return q return q
} }

10
lapack/testlapack/matgen_test.go
View File

@@ -89,3 +89,13 @@ func TestDlagge(t *testing.T) {
} }
} }
func TestRandomOrthogonal(t *testing.T) {
rnd := rand.New(rand.NewSource(1))
for n := 1; n <= 20; n++ {
q := randomOrthogonal(n, rnd)
if !isOrthogonal(q) {
t.Errorf("Case n=%v: Q not orthogonal", n)
}
}
}