Kokkos Node API and Local Linear Algebra Kernels Version of the Day
Tsqr_nodeTestProblem.hpp
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00041 
00042 #ifndef __TSQR_Test_nodeTestProblem_hpp
00043 #define __TSQR_Test_nodeTestProblem_hpp
00044 
00045 #include <Tsqr_Random_MatrixGenerator.hpp>
00046 #include <Tsqr_ScalarTraits.hpp>
00047 
00048 #include <algorithm>
00049 #include <vector>
00050 
00053 
00054 namespace TSQR {
00055   namespace Test {
00056 
00059     template< class Ordinal, class Scalar, class Generator >
00060     void
00061     nodeTestProblem (Generator& generator,
00062          const Ordinal nrows, 
00063          const Ordinal ncols,
00064          Scalar A[],
00065          const Ordinal lda,
00066          const bool numerically_interesting)
00067     {
00068       typedef TSQR::Random::MatrixGenerator< Ordinal, Scalar, Generator > matgen_type; 
00069       matgen_type matGen (generator);
00070       
00071       if (numerically_interesting)
00072   {
00073     typedef typename ScalarTraits< Scalar >::magnitude_type magnitude_type;
00074 
00075     std::vector< magnitude_type > singular_values (std::min(nrows, ncols));
00076     singular_values[0] = magnitude_type (1);
00077     for (Ordinal k = 1; k < std::min(nrows, ncols); ++k)
00078       singular_values[k] = singular_values[k-1] / magnitude_type(2);
00079 
00080     matGen.fill_random_svd (nrows, ncols, A, lda, &singular_values[0]);
00081   }
00082       else
00083   matGen.fill_random (nrows, ncols, A, lda);
00084     }
00085 
00086   } // namespace Test
00087 } // namespace TSQR
00088 
00089 #endif // __TSQR_Test_nodeTestProblem_hpp
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