sp_test

http://gams.cam.nist.gov/acmd/Staff/RPozo/sparselib++.html

./tspsm
./tsl  la2d8.hb
./tpre la1d8.hb 
./tsp B_50_40.txt x_40.txt y_50.txt B_x.txt Bt_y.txt
./tsp A_40.txt x_40.txt x_40.txt Ax.txt Atx.txt