test/unaryviewstride.cpp

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2021 Andrew Johnson <andrew.johnson@arjohnsonau.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

#include "main.h"

template <int OuterStride, int InnerStride, typename VectorType>
void unaryview_stride(const VectorType& m) {
  typedef typename VectorType::Scalar Scalar;
  Index rows = m.rows();
  Index cols = m.cols();
  VectorType vec = VectorType::Random(rows, cols);

  struct view_op {
    EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const Scalar& operator()(const Scalar& v) const { return v; }
  };

  CwiseUnaryView<view_op, VectorType, Stride<OuterStride, InnerStride>> vec_view(vec);
  VERIFY(vec_view.outerStride() == (OuterStride == 0 ? 0 : OuterStride));
  VERIFY(vec_view.innerStride() == (InnerStride == 0 ? 1 : InnerStride));
}

EIGEN_DECLARE_TEST(unaryviewstride) {
  CALL_SUBTEST_1((unaryview_stride<1, 2>(MatrixXf())));
  CALL_SUBTEST_1((unaryview_stride<0, 0>(MatrixXf())));
  CALL_SUBTEST_2((unaryview_stride<1, 2>(VectorXf())));
  CALL_SUBTEST_2((unaryview_stride<0, 0>(VectorXf())));
  CALL_SUBTEST_3((unaryview_stride<1, 2>(RowVectorXf())));
  CALL_SUBTEST_3((unaryview_stride<0, 0>(RowVectorXf())));
}