SparseMatrixBuilder

Source: tests/sparse/SparseMatrixBuilder.cpp

// ========================================================================= //
// This file is part of MyraMath, copyright (c) 2014-2019 by Ryan A Chilton  //
// and distributed by MyraCore, LLC. See LICENSE.txt for license terms.      //
// ========================================================================= //

// Containers.
#include <myramath/dense/Matrix.h>
#include <myramath/dense/MatrixRange.h>
#include <myramath/sparse/SparseMatrix.h>
#include <myramath/sparse/SparseMatrixRange.h>

// Algorithms.
#include <myramath/dense/frobenius.h>

// Reporting.
#include <tests/myratest.h>

using namespace myra;

ADD_TEST("SparseMatrixBuilder","[sparse]")
  {
  auto A = SparseMatrix<double>::random(10,10,25);
  auto B = SparseMatrix<double>::random(10,10,25);
  double error_p = frobenius( (A+B).make_Matrix()-(A.make_Matrix()+B.make_Matrix()) );
  double error_m = frobenius( (A-B).make_Matrix()-(A.make_Matrix()-B.make_Matrix()) );  
  myra::out() << "| A+B(sparse) - A+B(dense) | = " << error_p << std::endl;
  myra::out() << "| A-B(sparse) - A-B(dense) | = " << error_m << std::endl;  
  double tolerance = 1.0e-12;
  REQUIRE(error_p < tolerance);
  REQUIRE(error_m < tolerance);    
  }

Results: [PASS]

| A+B(sparse) - A+B(dense) | = 0
| A-B(sparse) - A-B(dense) | = 0

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