testlapack: add isCanonicalSchur function

gonum · Aug 2, 2016 · 58647df · 58647df
1 parent 4cd5473
commit 58647df
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/testlapack/general.go b/testlapack/general.go
@@ -838,3 +838,7 @@ func eye(n, stride int) blas64.General {
 	}
 	return ans
 }
+
+func isCanonicalSchur(a, b, c, d float64) bool {
+	return c == 0 || (a == d && b*c < 0)
+}