From 69e967405bb4e3a6c575c4fece054f5f28fa1da4 Mon Sep 17 00:00:00 2001
From: Thinh <mrlordkaj@gmail.com>
Date: Mon, 14 Apr 2025 18:57:25 +0700
Subject: [PATCH 1/3] Add dot product operation

---
 impl/NotSoBasicLinearAlgebra.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/impl/NotSoBasicLinearAlgebra.h b/impl/NotSoBasicLinearAlgebra.h
index 6381d7d..a33c171 100644
--- a/impl/NotSoBasicLinearAlgebra.h
+++ b/impl/NotSoBasicLinearAlgebra.h
@@ -33,6 +33,18 @@ Matrix<3, Cols, typename ParentTypeA::DType> CrossProduct(
     return ret;
 }
 
+template <typename ParentTypeA, typename ParentTypeB, int Dim>
+typename ParentTypeA::DType DotProduct(
+    const MatrixBase<ParentTypeA, Dim, 1, typename ParentTypeA::DType> &vecA,
+    const MatrixBase<ParentTypeB, Dim, 1, typename ParentTypeA::DType> &vecB)
+{
+    typename ParentTypeA::DType ret = 0;
+    for (int i = 0; i < Dim; i++) {
+        ret += vecA(i) * vecB(i);
+    }
+    return ret;
+}
+
 template <typename ParentType>
 struct LUDecomposition
 {

From 2f6dfc07a7273c142fe1ebc749e9b558229f9793 Mon Sep 17 00:00:00 2001
From: Thinh Pham <mrlordkaj@gmail.com>
Date: Tue, 15 Apr 2025 05:56:02 +0700
Subject: [PATCH 2/3] Fix ctest --rerun-failed argument typo.

---
 .github/workflows/run_tests.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 318d261..b99aba7 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -24,4 +24,4 @@ jobs:
 
     - name: Test
       working-directory: ${{github.workspace}}/build
-      run: ctest -rerun-failed --output-on-failure -C ${{env.BUILD_TYPE}}
+      run: ctest --rerun-failed --output-on-failure -C ${{env.BUILD_TYPE}}

From b59278e4238f3f2e9df7e1213f77e6680de2804f Mon Sep 17 00:00:00 2001
From: Thinh Pham <mrlordkaj@gmail.com>
Date: Wed, 16 Apr 2025 12:44:01 +0700
Subject: [PATCH 3/3] Add unit test for DotProduct.

---
 test/test_linear_algebra.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test/test_linear_algebra.cpp b/test/test_linear_algebra.cpp
index f45d9ed..d76b9f1 100644
--- a/test/test_linear_algebra.cpp
+++ b/test/test_linear_algebra.cpp
@@ -35,6 +35,19 @@ TEST(LinearAlgebra, CrossProduct)
     }
 }
 
+TEST(LinearAlgebra, DotProduct)
+{
+    // Test with Dimension 3, int
+    Matrix<3, 1, int> A = {2, 3, 4};
+    Matrix<3, 1, int> B = {7, 8, 9};
+    EXPECT_FLOAT_EQ(DotProduct(A, B), 74);
+
+    // Test with Dimension 4, float
+    Matrix<4> C = {2.5f, -3.4f, 4.3f, 5.2f};
+    Matrix<4> D = {6.7f, 7.6f, -8.5f, 9.4f};
+    EXPECT_NEAR(DotProduct(C, D), 3.23999f, 1e-5);
+}
+
 TEST(LinearAlgebra, LUDecomposition)
 {
     Matrix<7, 7> A = {16, 78, 50, 84, 70, 63, 2, 32, 33, 61, 40, 17, 96, 98, 50, 80, 78, 27, 86, 49, 57, 10, 42, 96, 44,