diff --git a/mm_eigen.hh b/mm_eigen.hh
deleted file mode 100644
index 8d57a91..0000000
--- a/mm_eigen.hh
+++ /dev/null
@@ -1,12 +0,0 @@
-#include <Eigen/Dense>
-
-inline void dsqmm3(double * a, double * b, double * c, int n) {
-  using Matrix =
-      Eigen::Map<Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic>>;
-
-  Matrix A(a, n, n);
-  Matrix B(a, n, n);
-  Matrix C(a, n, n);
-
-  C = A * B;
-}
diff --git a/mm_hand.hh b/mm_hand.hh
deleted file mode 100644
index 65c4ba8..0000000
--- a/mm_hand.hh
+++ /dev/null
@@ -1,9 +0,0 @@
-inline void dsqmm2(double * a, double * b, double * c, int n) {
-  for (int i = 0; i < n; ++i) {
-    for (int j = 0; j < n; ++j) {
-      for (int k = 0; k < n; ++k) {
-        c[i + j * n] += a[i + k * n] * b[k + j * n];
-      }
-    }
-  }
-}
diff --git a/mm_ugly.hh b/mm_ugly.hh
deleted file mode 100644
index f09c058..0000000
--- a/mm_ugly.hh
+++ /dev/null
@@ -1,2 +0,0 @@
-// clang-format off
-inline void dsqmm1(double*a,double*b,double*c,int n){for(int i=0;i<n;++i){for(int j=0;j<n;++j){for(int k=0;k<n;++k){c[i+j*n]+=a[i+k*n]*b[k+j*n];}}}}