Move test fixtures to samples/

samples/matlab/average.m

@@ -0,0 +1,9 @@
+function y = average(x)
+% AVERAGE Mean of vector elements.
+% AVERAGE(X), where X is a vector, is the mean of vector
+% elements. Nonvector input results in an error.
+[m,n] = size(x);
+if (~((m == 1) | (n == 1)) | (m == 1 & n == 1))
+    error('Input must be a vector')
+end
+y = sum(x)/length(x);