From b51427d2abb401d1402eebd7bf61e93bca47f3a2 Mon Sep 17 00:00:00 2001
From: Roland Grinis <roland.grinis@grinisrit.com>
Date: Fri, 9 Apr 2021 12:26:03 +0100
Subject: [PATCH] test to fix determinant

---
 .../tensors/core/TestDoubleLinearOpsAlgebra.kt      | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt b/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt
index 2914b216b..37caf88fe 100644
--- a/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt
+++ b/kmath-tensors/src/commonTest/kotlin/space/kscience/kmath/tensors/core/TestDoubleLinearOpsAlgebra.kt
@@ -34,6 +34,19 @@ class TestDoubleLinearOpsTensorAlgebra {
 
     }
 
+    @Test
+    fun testDet() = DoubleLinearOpsTensorAlgebra {
+        val m = fromArray(
+            intArrayOf(3, 3), doubleArrayOf(
+                2.1843, 1.4391, -0.4845,
+                1.4391, 1.7772, 0.4055,
+                -0.4845, 0.4055, 0.7519
+            )
+        )
+        println(m.det().value())
+        println(0.0197) //expected value
+    }
+
     @Test
     fun testInvLU() = DoubleLinearOpsTensorAlgebra {
         val tensor = fromArray(