--- a
+++ b/SLEP_package_4.1/mexC.m
@@ -0,0 +1,74 @@
+%
+% In this file, we mex the C files used in this package.
+
+clear, clc;
+current_path=cd;
+
+%% Output infor
+%%
+fprintf('\n ----------------------------------------------------------------------------');
+fprintf('\n The program is mexing the C files. Please wait...');
+fprintf('\n If you have problem with mex, you can refer to the help of Matlab.');
+fprintf('\n If you cannot solve the problem, please contact with Jun Liu (j.liu@asu.edu)\n\n');
+
+%% currently, this package uses the following C files 
+%%            (in the folder /SLEP/CFiles)
+
+
+% files in the folder q1
+cd([current_path '/SLEP/CFiles/q1']);
+mex epp.c;
+mex ep1R.c;
+mex ep21d.c;
+mex ep21R.c;
+mex eplb.c;
+mex eppMatrix.c;
+mex eppVector.c;
+mex eppVectorR.c;
+mex epsgLasso.c;
+
+% file in the folder flsa
+cd([current_path '/SLEP/CFiles/flsa']);
+mex flsa.c;
+
+% file in the folder SpInvCoVa
+cd([current_path '/SLEP/CFiles/SpInvCoVa']);
+mex invCov.c;
+
+% files in the folder tree
+cd([current_path '/SLEP/CFiles/tree']);
+mex altra.c;
+mex altra_mt.c;
+mex treeNorm.c;
+mex findLambdaMax.c;
+mex findLambdaMax_mt.c;
+mex computeLambda2Max.c;
+
+mex general_altra.c;
+mex general_altra_mt.c;
+mex general_treeNorm.c;
+mex general_findLambdaMax.c;
+mex general_findLambdaMax_mt.c;
+
+% files in the folder order
+cd([current_path '/SLEP/CFiles/order']);
+mex orderTree.c;
+mex orderTree_without_nonnegative.c;
+mex orderTreeBinary.c;
+mex orderTreeDepth1.c;
+mex sequence_bottomup.c;
+mex sequence_topdown.c;
+
+
+%% Output infor
+%% 
+fprintf('\n\n The C files in the folder CFiles have been successfully mexed.');
+fprintf('\n\n You can now use the functions in the folder SLEP.');
+fprintf('\n You are suggested to read the manual for better using the codes.');
+fprintf('\n You are also suggested to run the examples in the folder Examples for these functions.');
+fprintf('\n\n These codes are being developed by Jun Liu and Jieping Ye at Arizona State University.');
+fprintf('\n If there is any problem, please contact with Jun Liu and Jieping Ye ({j.liu,jieping.ye}@asu.edu).');
+fprintf('\n\n Thanks!');
+fprintf('\n ----------------------------------------------------------------------------\n');
+
+cd(current_path);
\ No newline at end of file