The programs in THIS DIRECTORY should be used to solve the 
LOCATION PROBLEM. If you are trying to solve YOUR OWN PROBLEM go to 
the PREVIOUS DIRECTORY.

This piece of software implements an Augmented Lagrangian method 
described in [1]. This particular implementation, specially designed 
for large-scale and arbitrary lower-level constraints problems solves 
the Augmented Lagrangian  subproblems using the Spectral projected 
Gradient (SPG) method introduced in [2,3]. 

[1] R. Andreani, E. G. Birgin, J. M. Martínez and M. L. Schuverdt, 
"On Augmented Lagrangian methods with general lower-level constraints", 
submitted, 2005.

[2]  E. G. Birgin, J. M. Martínez and M. Raydan, "Nonmonotone spectral 
projected gradient methods on convex sets", SIAM Journal on 
Optimization 10, pp. 1196-1211, 2000.

[3] E. G. Birgin, J. M. Martínez and M. Raydan, "Algorithm 813: SPG - 
software for convex-constrained optimization", ACM Transactions on 
Mathematical Software 27, pp. 340-349, 2001.

Compile typing

f77 -O4 alspg-location.for genpro.for -o alspg-location

and execute using the scripts runlocation-alspg and runlocation-alspg-2.

After running both scripts it should be generated a table very similar
to the one in the file alspg-table.out. See [1] for details.