function X=multnormrnd(n,MN,SIGMA)
%generates n observations with covariance matrix SIGMA
% changed november 2002 to include MN 
p=size(SIGMA);             A=msqrt(SIGMA);
MN=reshape(MN,1,p(1)); 
X=randn(n,p(1))*A; 
X=X+repmat(MN,n,1);  %add on the mean
