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43 
44 /*! \file  test_05.cpp
45     \brief Test ScaledStdVector interface.
46 */
47 
48 
49 #include "ROL_ScaledStdVector.hpp"
50 
51 #include "ROL_Stream.hpp"
52 #include "Teuchos_GlobalMPISession.hpp"
53 
54 typedef double RealT;
55 typedef double ElementT;
56 
main(int argc,char * argv[])57 int main(int argc, char *argv[]) {
58 
59   Teuchos::GlobalMPISession mpiSession(&argc, &argv,0);
60 
61   int iprint = argc - 1;
62   ROL::nullstream bhs; // outputs nothing
63   std::ostream& outStream = (iprint > 0) ? std::cout : bhs;
64 
65   int errorFlag = 0;
66 
67   RealT errtol = ROL::ROL_THRESHOLD<RealT>();
68 
69   try {
70     // Dimension of the optimization vector
71 
72     int dim = 10;
73 
74     // Create Tpetra::MultiVectors (single vectors)
75     ROL::Ptr<std::vector<ElementT> > x_ptr
76       = ROL::makePtr<std::vector<ElementT>>(dim);
77     ROL::Ptr<std::vector<ElementT> > y_ptr
78       = ROL::makePtr<std::vector<ElementT>>(dim);
79     ROL::Ptr<std::vector<ElementT> > W_ptr
80       = ROL::makePtr<std::vector<ElementT>>(dim,static_cast<ElementT>(2));
81 
82     // Random elements
83     for (int i = 0; i < dim; i++) {
84       (*x_ptr)[i] = static_cast<ElementT>(rand())/static_cast<ElementT>(RAND_MAX);
85       (*y_ptr)[i] = static_cast<ElementT>(rand())/static_cast<ElementT>(RAND_MAX);
86     }
87 
88     // Create ROL vectors
89     ROL::PrimalScaledStdVector<RealT,ElementT> x(x_ptr,W_ptr);
90     ROL::DualScaledStdVector<RealT,ElementT>   y(y_ptr,W_ptr);
91 
92     RealT xy = x.dot(y.dual());
93     RealT yx = y.dot(x.dual());
94 
95     outStream << "\nAbsolute error between x.dot(y.dual()) and y.dot(x.dual()): "
96               << std::abs(xy-yx) << "\n";
97     outStream << "x.dot(y.dual()): " << xy << "\n";
98     outStream << "y.dot(x.dual()): " << yx << "\n";
99     if ( std::abs(xy-yx) > errtol ) {
100       outStream << "---> POSSIBLE ERROR ABOVE!\n";
101       errorFlag++;
102     }
103 
104     RealT xx = std::sqrt(x.dot(x)), xnorm = x.norm();
105     RealT yy = std::sqrt(y.dot(y)), ynorm = y.norm();
106 
107     outStream << "\nAbsolute error between sqrt(x.dot(x)) and x.norm(): "
108               << std::abs(xx-xnorm) << "\n";
109     outStream << "sqrt(x.dot(x)): " << xx << "\n";
110     outStream << "x.norm():       " << xnorm << "\n";
111     if ( std::abs(xx-xnorm) > errtol ) {
112       outStream << "---> POSSIBLE ERROR ABOVE!\n";
113       errorFlag++;
114     }
115 
116     outStream << "\nAbsolute error between sqrt(y.dot(y)) and y.norm(): "
117               << std::abs(yy-ynorm) << "\n";
118     outStream << "sqrt(y.dot(y)): " << yy << "\n";
119     outStream << "y.norm():       " << ynorm << "\n";
120     if ( std::abs(yy-ynorm) > errtol ) {
121       outStream << "---> POSSIBLE ERROR ABOVE!\n";
122       errorFlag++;
123     }
124 
125     // clone z from x, deep copy x into z, norm of z
126     ROL::Ptr<ROL::Vector<RealT> > z = x.clone();
127     z->set(x);
128     RealT znorm = z->norm();
129     outStream << "\nNorm of ROL::Vector z (clone of x): " << znorm << "\n";
130     if ( std::abs(xnorm - znorm) > errtol ) {
131       outStream << "---> POSSIBLE ERROR ABOVE!\n";
132       errorFlag++;
133     }
134     ROL::Ptr<ROL::Vector<RealT> > w = y.clone();
135     w = y.clone();
136     w->set(y);
137     RealT wnorm = w->norm();
138     outStream << "\nNorm of ROL::Vector w (clone of y): " << wnorm << "\n";
139     if ( std::abs(ynorm - wnorm) > errtol ) {
140       outStream << "---> POSSIBLE ERROR ABOVE!\n";
141       errorFlag++;
142     }
143 
144     // Standard tests.
145     ROL::Ptr<std::vector<ElementT> > x1_ptr
146       = ROL::makePtr<std::vector<ElementT>>(dim);
147     ROL::Ptr<std::vector<ElementT> > y1_ptr
148       = ROL::makePtr<std::vector<ElementT>>(dim);
149     ROL::Ptr<std::vector<ElementT> > z1_ptr
150       = ROL::makePtr<std::vector<ElementT>>(dim);
151 
152     // Random elements
153     for (int i = 0; i < dim; i++) {
154       (*x1_ptr)[i] = static_cast<ElementT>(rand())/static_cast<ElementT>(RAND_MAX);
155       (*y1_ptr)[i] = static_cast<ElementT>(rand())/static_cast<ElementT>(RAND_MAX);
156       (*z1_ptr)[i] = static_cast<ElementT>(rand())/static_cast<ElementT>(RAND_MAX);
157     }
158 
159     // Create ROL vectors
160     ROL::PrimalScaledStdVector<RealT,ElementT> x1(x1_ptr,W_ptr);
161     ROL::PrimalScaledStdVector<RealT,ElementT> y1(y1_ptr,W_ptr);
162     ROL::PrimalScaledStdVector<RealT,ElementT> z1(z1_ptr,W_ptr);
163 
164     std::vector<RealT> consistency = x1.checkVector(y1, z1, true, outStream);
165     ROL::StdVector<RealT> checkvec( ROL::makePtrFromRef(consistency) );
166     if (checkvec.norm() > std::sqrt(errtol)) {
167       errorFlag++;
168     }
169 
170   }
171 
172   catch (std::logic_error& err) {
173     outStream << err.what() << "\n";
174     errorFlag = -1000;
175   }; // end try
176 
177   if (errorFlag != 0)
178     std::cout << "End Result: TEST FAILED\n";
179   else
180     std::cout << "End Result: TEST PASSED\n";
181 
182   return 0;
183 }
184