Enable github actions to build examples. Avoid passing a polytope as …

…a const reference.

.github/workflows/cmake-clang.yml

@@ -1,5 +1,5 @@
 ##############################################################################
-# GitHub Actions Workflow for volesti to build tests with GCC
+# GitHub Actions Workflow for volesti to build tests with Clang
 #
 # Copyright (c) 2020-2022 Vissarion Fisikopoulos
 #
@@ -36,4 +36,4 @@ jobs:
              cd build;
              cmake -D CMAKE_CXX_COMPILER=${{ matrix.config.compiler }} -D CMAKE_CXX_FLAGS=-fsanitize=memory -D CMAKE_CXX_FLAGS=-fsanitize=undefined -D CMAKE_CXX_FLAGS=-g -D DISABLE_NLP_ORACLES=ON -D USE_MKL=OFF ../test;
              make;
-             ctest --verbose;
+             ctest --verbose;

.github/workflows/cmake-examples.yml

@@ -0,0 +1,40 @@
+##############################################################################
+# GitHub Actions Workflow for volesti to build tests with GCC
+#
+# Copyright (c) 2020-2022 Vissarion Fisikopoulos
+#
+# Licensed under GNU LGPL.3, see LICENCE file
+##############################################################################
+name: cmake-examples
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: ${{ matrix.config.os }} - ${{ matrix.config.compiler }}
+    strategy:
+          fail-fast: false
+          matrix:
+            config:
+              - {os: ubuntu-22.04, compiler_pkg: clang-11, compiler: clang++-11}
+              - {os: ubuntu-22.04, compiler_pkg: g++-11, compiler: g++-11}
+    runs-on: ${{ matrix.config.os }}
+    steps:
+      - uses: actions/checkout@v1
+      - run: sudo apt-get update || true;
+             sudo apt-get install ${{ matrix.config.compiler_pkg }} lp-solve libomp-dev libopenblas-dev libarpack2-dev;
+      - name: Build examples
+        run: |
+          cd examples
+          for dir in */; do
+            if [ "$dir" != "EnvelopeProblemSOS/" ] && [ "$dir" != "python_utilities/" ]; then
+              echo
+              echo "Building examples in $dir ....................."
+              cd "$dir"
+              mkdir build && cd build
+              cmake -DCMAKE_CXX_COMPILER=${{ matrix.config.compiler }} -DUSE_MKL=OFF ..
+              make
+              cd ../..
+            fi
+          done
+

examples/hpolytope-volume/hpolytopeVolume.cpp

@@ -29,7 +29,7 @@ typedef typename Kernel::Point Point;
 typedef BoostRandomNumberGenerator<boost::mt19937, NT, 3> RNGType;
 typedef HPolytope <Point> HPOLYTOPE;
 
-void calculateVolumes(const HPOLYTOPE &HP) {
+void calculateVolumes(HPOLYTOPE &HP) {
 	// Setup parameters for calculating volume
 	int walk_len = 10 + HP.dimension()/10;
 	NT e=0.1;

examples/mmcs_method/CMakeLists.txt

@@ -105,7 +105,7 @@ else ()
   add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-DBOOST_NO_AUTO_PTR")
   #add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-lgslcblas")
   #add_definitions( "-O3 -lgsl -lm -ldl -lgslcblas" )
-  
+
   find_package(OpenMP REQUIRED)
 
   add_executable (skinny_cube_10_dim skinny_cube_10_dim.cpp)

examples/multithread_sampling/CMakeLists.txt

@@ -97,19 +97,19 @@ else ()
   endif ()
 
 
-  add_definitions(${CMAKE_CXX_FLAGS} "-std=c++11")  # enable C++11 standard
+  #add_definitions(${CMAKE_CXX_FLAGS} "-std=c++11")  # enable C++11 standard
   add_definitions(${CMAKE_CXX_FLAGS} "-O3")  # optimization of the compiler
   #add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-lgsl")
   add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-lm")
   add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-ldl")
   add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-DBOOST_NO_AUTO_PTR")
   #add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-lgslcblas")
   #add_definitions( "-O3 -lgsl -lm -ldl -lgslcblas" )
-  
+
   find_package(OpenMP REQUIRED)
 
   add_executable (sampling_multithread_walks sampling_multithread_walks.cpp)
-  
+
   TARGET_LINK_LIBRARIES(sampling_multithread_walks ${LP_SOLVE} OpenMP::OpenMP_CXX)
 
 

examples/multithread_sampling/sampling_multithread_walks.cpp

@@ -48,12 +48,12 @@ MT get_uniform_samples(Polytope &P,
     std::list<Point> randPoints;
 
     typedef RandomPointGeneratorMultiThread <walk> _RandomPointGeneratorMultiThread;
-    
+
     _RandomPointGeneratorMultiThread::apply(P, p, N, walk_len, num_threads, randPoints,
                                             push_back_policy, rng);
 
     unsigned int d = P.dimension();
-    
+
     MT samples(d, N);
     unsigned int jj = 0;
 
@@ -92,7 +92,7 @@ MT get_gaussian_samples(Polytope &P,
     std::list<Point> randPoints;
 
     typedef GaussianPointGeneratorMultiThread <walk> _GaussianPointGeneratorMultiThread;
-    
+
     _GaussianPointGeneratorMultiThread::apply(P, p, a_i, N, walk_len, num_threads, randPoints,
                                               push_back_policy, rng);
 
@@ -118,11 +118,10 @@ void test_uniform_random_walk(std::string random_walk, unsigned int const& num_t
     typedef Eigen::Matrix<NT,Eigen::Dynamic,Eigen::Dynamic> MT;
     typedef Eigen::Matrix<NT,Eigen::Dynamic,1> VT;
     typedef BoostRandomNumberGenerator<boost::mt19937, NT, 3> RNGType;
-    Hpolytope P;
     unsigned int d = 10, walk_len = 5, N = 5000;
 
     std::cout << "--- Sampling with " + random_walk + " walk from H-cube10" << std::endl;
-    P = generate_cube<Hpolytope>(d, false);
+    Hpolytope P = generate_cube<Hpolytope>(d, false);
     RNGType rng(P.dimension());
 
     MT samples = get_uniform_samples<MT, WalkType, Point>(P, rng, walk_len, N, num_threads);
@@ -155,7 +154,7 @@ void test_gaussian_random_walk(std::string random_walk, unsigned int const& num_
 
 
 int main() {
-    
+
     unsigned int num_threads = 2;
 
     test_uniform_random_walk<double, BRDHRWalk_multithread>("BRDHR", num_threads);

examples/optimization_spectrahedra/CMakeLists.txt

@@ -78,11 +78,12 @@ IF (OPENBLAS_LIB)
         IF (GFORTRAN_LIB)
             message( STATUS "GFORTRAN_LIB found: ${GFORTRAN_LIB}" )
 
-            add_executable (boltzmann_hmc_walk boltzmann_hmc_walk.cpp)
-            TARGET_LINK_LIBRARIES(boltzmann_hmc_walk ${ARPACK_LIB} ${LAPACK_LIBRARIES} ${GFORTRAN_LIB})
+            # These are not compiling, see issue https://github.com/GeomScale/volesti/issues/264
+            #add_executable (boltzmann_hmc_walk boltzmann_hmc_walk.cpp)
+            #TARGET_LINK_LIBRARIES(boltzmann_hmc_walk ${ARPACK_LIB} ${LAPACK_LIBRARIES} ${GFORTRAN_LIB})
 
-            add_executable (solve_sdp solve_sdp.cpp)
-            TARGET_LINK_LIBRARIES(solve_sdp ${GFORTRAN_LIB} ${LAPACK_LIBRARIES} ${ARPACK_LIB})
+            #add_executable (solve_sdp solve_sdp.cpp)
+            #TARGET_LINK_LIBRARIES(solve_sdp ${GFORTRAN_LIB} ${LAPACK_LIBRARIES} ${ARPACK_LIB})
 
         ELSE()
             MESSAGE(STATUS "gfortran is required but it could not be found")

examples/sampling-hpolytope-with-billiard-walks/sampler.cpp

@@ -37,7 +37,7 @@ void write_to_file(std::string filename, std::vector<Point> const& randPoints) {
 }
 
 
-void sample_using_uniform_billiard_walk(HPOLYTOPE const& HP, RNGType& rng, unsigned int walk_len, unsigned int num_points) {
+void sample_using_uniform_billiard_walk(HPOLYTOPE& HP, RNGType& rng, unsigned int walk_len, unsigned int num_points) {
     std::string filename = "uniform_billiard_walk.txt";
     typedef RandomPointGenerator<BilliardWalkType> Generator;
 
@@ -49,7 +49,7 @@ void sample_using_uniform_billiard_walk(HPOLYTOPE const& HP, RNGType& rng, unsig
 }
 
 
-void sample_using_uniform_accelerated_billiard_walk(HPOLYTOPE const& HP, RNGType& rng, unsigned int walk_len, unsigned int num_points) {
+void sample_using_uniform_accelerated_billiard_walk(HPOLYTOPE& HP, RNGType& rng, unsigned int walk_len, unsigned int num_points) {
     std::string filename = "uniform_accelerated_billiard_walk.txt";
     typedef RandomPointGenerator<AcceleratedBilliardWalkType> Generator;
 
@@ -61,7 +61,7 @@ void sample_using_uniform_accelerated_billiard_walk(HPOLYTOPE const& HP, RNGType
 }
 
 
-void sample_using_gaussian_billiard_walk(HPOLYTOPE const& HP, RNGType& rng, unsigned int walk_len, unsigned int num_points) {
+void sample_using_gaussian_billiard_walk(HPOLYTOPE& HP, RNGType& rng, unsigned int walk_len, unsigned int num_points) {
     std::string filename = "gaussian_billiard_walk.txt";
     typedef MultivariateGaussianRandomPointGenerator<GaussianAcceleratedWalkType> Generator;
 

examples/vpolytope-volume/CMakeLists.txt

@@ -106,7 +106,7 @@ else ()
   add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-ldl")
   add_definitions(${CXX_COVERAGE_COMPILE_FLAGS} "-DBOOST_NO_AUTO_PTR")
 
-  add_executable (vpolytopeVolume vpolytopeVolume.cpp)
-  TARGET_LINK_LIBRARIES(vpolytopeVolume ${LP_SOLVE})
+  add_executable (vpolytopevolume vpolytopevolume.cpp)
+  TARGET_LINK_LIBRARIES(vpolytopevolume ${LP_SOLVE})
 
 endif()

examples/vpolytope-volume/vpolytopevolume.cpp

@@ -28,7 +28,7 @@ typedef typename Kernel::Point Point;
 typedef BoostRandomNumberGenerator<boost::mt19937, NT, 3> RNGType;
 typedef VPolytope <Point> VPOLYTOPE;
 
-void calculateVolumes(const VPOLYTOPE &VP) {
+void calculateVolumes(VPOLYTOPE &VP) {
 	// Setup parameters for calculating volume
 	int walk_len = 10 + VP.dimension()/10;
 	NT e=0.1;

include/convex_bodies/ballintersectconvex.h

@@ -28,7 +28,7 @@ class BallIntersectPolytope {
 
     BallIntersectPolytope() {}
 
-    BallIntersectPolytope(Polytope const& PP, CBall &BB) : P(PP), B(BB) {};
+    BallIntersectPolytope(Polytope& PP, CBall &BB) : P(PP), B(BB) {};
 
     Polytope first() const { return P; }
     CBall second() const { return B; }

include/random_walks/boundary_cdhr_walk.hpp

@@ -26,7 +26,7 @@ struct BCDHRWalk
         typedef typename Point::FT NT;
 
         template <typename GenericPolytope>
-        Walk(GenericPolytope const& P, Point const& p, RandomNumberGenerator& rng)
+        Walk(GenericPolytope& P, Point const& p, RandomNumberGenerator& rng)
         {
             initialize(P, p, rng);
         }

include/random_walks/boundary_rdhr_walk.hpp

@@ -27,7 +27,7 @@ struct BRDHRWalk
         typedef typename Point::FT NT;
 
         template <typename GenericPolytope>
-        Walk(GenericPolytope const& P, Point const& p, RandomNumberGenerator& rng)
+        Walk(GenericPolytope& P, Point const& p, RandomNumberGenerator& rng)
         {
             initialize(P, p, rng);
         }

include/random_walks/compute_diameter.hpp

@@ -205,7 +205,7 @@ template <typename Point>
 struct compute_diameter<OrderPolytope<Point>>
 {
     template <typename NT>
-    static NT compute(OrderPolytope<Point> const& P)
+    static NT compute(OrderPolytope<Point>& P)
     {
         return std::sqrt(NT(P.dimension()));
     }
@@ -215,7 +215,7 @@ template <typename Point>
 struct compute_diameter<BallIntersectPolytope<OrderPolytope<Point>, Ellipsoid<Point> > >
 {
     template <typename NT>
-    static NT compute(BallIntersectPolytope<OrderPolytope<Point>, Ellipsoid<Point>> const& P)
+    static NT compute(BallIntersectPolytope<OrderPolytope<Point>, Ellipsoid<Point>>& P)
     {
         NT polytope_diameter = std::sqrt(NT(P.dimension()));
         return std::min(polytope_diameter, (NT(2) * P.radius()));

include/random_walks/exponential_hamiltonian_monte_carlo_exact_walk.hpp

@@ -84,7 +84,7 @@ struct Walk
     <
         typename GenericPolytope
     >
-    inline bool apply(GenericPolytope const& P,
+    inline bool apply(GenericPolytope& P,
                       Point& p,   // a point to start
                       unsigned int const& walk_length,
                       RandomNumberGenerator &rng)
@@ -104,7 +104,7 @@ struct Walk
                 }
                 T = rng.sample_urdist() * _Len;
                 _v = GetDirection<Point>::apply(n, rng, false);
-                
+
                 it = 0;
                 while (it < _rho)
                 {
@@ -122,7 +122,7 @@ struct Walk
                     P.compute_reflection(_v, _p, pbpair.second);
                     it++;
                 }
-                
+
             } while (P.is_in(_p, INSIDE_BODY_TOLLERANCE) == 0);
             if (it == _rho) {
                 _p = p0;
@@ -137,7 +137,7 @@ struct Walk
     <
         typename GenericPolytope
     >
-    inline void get_starting_point(GenericPolytope const& P,
+    inline void get_starting_point(GenericPolytope& P,
                                    Point const& center,
                                    Point &q,
                                    unsigned int const& walk_length,
@@ -158,7 +158,7 @@ struct Walk
     <
         typename GenericPolytope
     >
-    inline void parameters_burnin(GenericPolytope const& P, 
+    inline void parameters_burnin(GenericPolytope& P,
                                   Point const& center,
                                   unsigned int const& num_points,
                                   unsigned int const& walk_length,
@@ -171,26 +171,26 @@ struct Walk
         pointset.push_back(_p);
         NT rad = NT(0), max_dist, Lmax = NT(0), radius = P.InnerBall().second;
 
-        for (int i = 0; i < num_points; i++) 
+        for (int i = 0; i < num_points; i++)
         {
             p = GetPointInDsphere<Point>::apply(n, radius, rng);
             p += center;
             initialize(P, p, rng);
 
             apply(P, p, walk_length, rng);
             max_dist = get_max_distance(pointset, p, rad);
-            if (max_dist > Lmax) 
+            if (max_dist > Lmax)
             {
                 Lmax = max_dist;
             }
-            if (2.0 * rad > Lmax) 
+            if (2.0 * rad > Lmax)
             {
                 Lmax = 2.0 * rad;
             }
             pointset.push_back(p);
         }
 
-        if (Lmax > _Len) 
+        if (Lmax > _Len)
         {
             update_delta(Lmax);
         }
@@ -210,7 +210,7 @@ private :
     <
         typename GenericPolytope
     >
-    inline void initialize(GenericPolytope const& P,
+    inline void initialize(GenericPolytope& P,
                            Point const& p,
                            RandomNumberGenerator &rng)
     {
@@ -219,7 +219,7 @@ private :
         _lambdas.setZero(P.num_of_hyperplanes());
         _Av.setZero(P.num_of_hyperplanes());
         _v = GetDirection<Point>::apply(n, rng, false);
-        
+
         do {
             _p = p;
             T = rng.sample_urdist() * _Len;
@@ -262,11 +262,11 @@ private :
     }
 
 
-    inline double get_max_distance(std::vector<Point> &pointset, Point const& q, double &rad) 
+    inline double get_max_distance(std::vector<Point> &pointset, Point const& q, double &rad)
     {
         double dis = -1.0, temp_dis;
         int jj = 0;
-        for (auto vecit = pointset.begin(); vecit!=pointset.end(); vecit++, jj++) 
+        for (auto vecit = pointset.begin(); vecit!=pointset.end(); vecit++, jj++)
         {
             temp_dis = (q.getCoefficients() - (*vecit).getCoefficients()).norm();
             if (temp_dis > dis) {

include/random_walks/gaussian_accelerated_billiard_walk.hpp

@@ -68,7 +68,7 @@ struct GaussianAcceleratedBilliardWalk
         typedef typename Point::FT NT;
 
         template <typename GenericPolytope, typename Ellipsoid>
-        Walk(GenericPolytope const& P,
+        Walk(GenericPolytope& P,
              Point const& p,
              Ellipsoid const& E,   // ellipsoid representing the Gaussian distribution
              RandomNumberGenerator &rng)
@@ -83,7 +83,7 @@ struct GaussianAcceleratedBilliardWalk
         }
 
         template <typename GenericPolytope, typename Ellipsoid>
-        Walk(GenericPolytope const& P,
+        Walk(GenericPolytope& P,
              Point const& p,
              Ellipsoid const& E,   // ellipsoid representing the Gaussian distribution
              RandomNumberGenerator &rng,
@@ -104,7 +104,7 @@ struct GaussianAcceleratedBilliardWalk
                         typename GenericPolytope,
                         typename Ellipsoid
                 >
-        inline void apply(GenericPolytope const& P,
+        inline void apply(GenericPolytope& P,
                           Point &p,       // a point to return the result
                           Ellipsoid const& E,   // ellipsoid representing the Gaussian distribution
                           unsigned int const& walk_length,
@@ -181,7 +181,7 @@ struct GaussianAcceleratedBilliardWalk
                         typename GenericPolytope,
                         typename Ellipsoid
                 >
-        inline void initialize(GenericPolytope const& P,
+        inline void initialize(GenericPolytope& P,
                                Point const& p,  // a point to start
                                Ellipsoid const& E,   // ellipsoid representing the Gaussian distribution
                                RandomNumberGenerator &rng)