3 files changed, 30 insertions, 0 deletions
diff --git a/cl/src/vector/distance.lisp b/cl/src/vector/distance.lisp
new file mode 100644
index 0000000..74631ce
--- /dev/null
+++ b/cl/src/vector/distance.lisp
@@ -0,0 +1,6 @@
+(in-package :lizfcm.vector)
+
+(defun distance (v1 v2 norm)
+  (let* ((d (mapcar #'- v1 v2))
+         (length (funcall norm d)))
+    length))
diff --git a/cl/src/vector/norm.lisp b/cl/src/vector/norm.lisp
new file mode 100644
index 0000000..2158296
--- /dev/null
+++ b/cl/src/vector/norm.lisp
@@ -0,0 +1,17 @@
+(in-package :lizfcm.vector)
+
+(defun p-norm (p)
+  (lambda (v)
+    (expt
+      (reduce (lambda (acc x)
+                (+ acc x))
+              (mapcar (lambda (x)
+                        (abs
+                          (expt x p)))
+                      v))
+      (/ 1 p))))
+
+(defun max-norm (v)
+  (reduce (lambda (acc x)
+            (max acc x))
+          v))
diff --git a/cl/src/vector/package.lisp b/cl/src/vector/package.lisp
new file mode 100644
index 0000000..009b190
--- /dev/null
+++ b/cl/src/vector/package.lisp
@@ -0,0 +1,7 @@
+(in-package :cl-user)
+(defpackage lizfcm.vector
+  (:use :cl)
+  (:export
+    :p-norm
+    :max-norm
+    :distance))