nestbyvalue.cpp File Reference

#include "main.h"

Macros
#define	TEST_ENABLE_TEMPORARY_TRACKING

Typedefs
typedef NestByValue< MatrixXd >	CpyMatrixXd
typedef CwiseBinaryOp< internal::scalar_sum_op< double, double >, const CpyMatrixXd, const CpyMatrixXd >	XprType

Functions
XprType	get_xpr_with_temps (const MatrixXd &a)
	EIGEN_DECLARE_TEST (nestbyvalue)

Macro Definition Documentation

TEST_ENABLE_TEMPORARY_TRACKING

#define TEST_ENABLE_TEMPORARY_TRACKING

Typedef Documentation

CpyMatrixXd

typedef NestByValue<MatrixXd> CpyMatrixXd

XprType

typedef CwiseBinaryOp<internal::scalar_sum_op<double, double>, const CpyMatrixXd, const CpyMatrixXd> XprType

Function Documentation

EIGEN_DECLARE_TEST()

EIGEN_DECLARE_TEST

(

nestbyvalue

)

                                {
  for (int i = 0; i < g_repeat; i++) {
    Index rows = internal::random<Index>(1, EIGEN_TEST_MAX_SIZE);
    Index cols = internal::random<Index>(1, EIGEN_TEST_MAX_SIZE);
    MatrixXd a = MatrixXd::Random(rows, cols);
    nb_temporaries = 0;
    XprType x = get_xpr_with_temps(a);
    VERIFY_IS_EQUAL(nb_temporaries, 6);
    MatrixXd b = x;
    VERIFY_IS_EQUAL(nb_temporaries, 6 + 1);
    VERIFY_IS_APPROX(b, a.rowwise().reverse().eval() + (a + a).eval());
    // Block expressions work with dense NestByValue.
    VERIFY_IS_APPROX(b, a.nestByValue().rowwise().reverse().eval() + (a.nestByValue() + a.nestByValue()).eval());
  }
}

References a, b, cols, EIGEN_TEST_MAX_SIZE, Eigen::g_repeat, get_xpr_with_temps(), i, nb_temporaries, rows, VERIFY_IS_APPROX, VERIFY_IS_EQUAL, and plotDoE::x.

get_xpr_with_temps()

XprType get_xpr_with_temps

(

const MatrixXd &

a

)

                                              {
  MatrixXd t1 = a.rowwise().reverse();
  MatrixXd t2 = a + a;
  return t1.nestByValue() + t2.nestByValue();
}

References a.

Referenced by EIGEN_DECLARE_TEST().