1 files changed, 20 insertions, 0 deletions
diff --git a/dist.cpp b/dist.cpp
new file mode 100644
index 0000000..aaa2167
--- /dev/null
+++ b/dist.cpp
@@ -0,0 +1,20 @@
+#include "mp.h"
+
+double mp::euclidean(const arma::rowvec &x1, const arma::rowvec &x2)
+{
+    return arma::norm(x1 - x2, 2);
+}
+
+arma::mat mp::dist(const arma::mat &X, double (*distCalc)(const arma::rowvec &, const arma::rowvec &))
+{
+    arma::uword n = X.n_rows;
+    arma::mat D(n, n, arma::fill::zeros);
+
+    for (arma::uword i = 0; i < n; i++)
+        for (arma::uword j = 0; j < i; j++) {
+            D(i, j) = distCalc(X.row(i), X.row(j));
+            D(j, i) = D(i, j);
+        }
+
+    return D;
+}