text: /*******************************************************************************
  * Copyright 2020-2021 Intel Corporation
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  *
  * SPDX-License-Identifier: Apache-2.0
  *******************************************************************************/
  
  #include <algorithm>
  #include <complex>
  #include <cstdlib>
  #include <iostream>
  #include <limits>
  #include <vector>
  
  #include <CL/sycl.hpp>
  #include "cblas.h"
  #include "oneapi/mkl.hpp"
  #include "oneapi/mkl/detail/config.hpp"
  #include "onemkl_blas_helper.hpp"
  #include "reference_blas_templates.hpp"
  #include "test_common.hpp"
  #include "test_helper.hpp"
  
  #include <gtest/gtest.h>
  
  using namespace sycl;
  using std::vector;
  
  extern std::vector<sycl::device *> devices;
  
  namespace {
  
  template <typename fp, typename fp_scalar>
  int test(device *dev, oneapi::mkl::layout layout, oneapi::mkl::uplo upper_lower, int n,
           fp_scalar alpha, int incx) {
      // Prepare data.
      vector<fp> x, A_ref, A;
      rand_vector(x, n, incx);
      rand_matrix(A, layout, oneapi::mkl::transpose::nontrans, n, n, n);
      A_ref = A;
  
      // Call Reference HPR.
      const int n_ref = n, incx_ref = incx;
      using fp_ref = typename ref_type_info<fp>::type;
      using fp_scalar_mkl = typename ref_type_info<fp_scalar>::type;
  
      ::hpr(convert_to_cblas_layout(layout), convert_to_cblas_uplo(upper_lower), &n_ref,
            (fp_scalar_mkl *)&alpha, (fp_ref *)x.data(), &incx_ref, (fp_ref *)A_ref.data());
  
      // Call DPC++ HPR.
  
      // Catch asynchronous exceptions.
      auto exception_handler = [](exception_list exceptions) {
          for (std::exception_ptr const &e : exceptions) {
              try {
                  std::rethrow_exception(e);
              }
              catch (exception const &e) {
                  std::cout << "Caught asynchronous SYCL exception during HPR:\n"
                            << e.what() << std::endl;
                  print_error_code(e);
              }
          }
      };
  
      queue main_queue(*dev, exception_handler);
  
      buffer<fp, 1> x_buffer = make_buffer(x);
      buffer<fp, 1> A_buffer = make_buffer(A);
  
      try {
  #ifdef CALL_RT_API
          switch (layout) {
              case oneapi::mkl::layout::column_major:
                  oneapi::mkl::blas::column_major::hpr(main_queue, upper_lower, n, alpha, x_buffer,
                                                       incx, A_buffer);
                  break;
              case oneapi::mkl::layout::row_major:
                  oneapi::mkl::blas::row_major::hpr(main_queue, upper_lower, n, alpha, x_buffer, incx,
                                                    A_buffer);
                  break;
              default: break;
          }
  #else
          switch (layout) {
              case oneapi::mkl::layout::column_major:
                  TEST_RUN_CT_SELECT(main_queue, oneapi::mkl::blas::column_major::hpr, upper_lower, n,
                                     alpha, x_buffer, incx, A_buffer);
                  break;
              case oneapi::mkl::layout::row_major:
                  TEST_RUN_CT_SELECT(main_queue, oneapi::mkl::blas::row_major::hpr, upper_lower, n,
                                     alpha, x_buffer, incx, A_buffer);
                  break;
              default: break;
          }
  #endif
      }
      catch (exception const &e) {
          std::cout << "Caught synchronous SYCL exception during HPR:\n" << e.what() << std::endl;
          print_error_code(e);
      }
  
      catch (const oneapi::mkl::unimplemented &e) {
          return test_skipped;
      }
  
      catch (const std::runtime_error &error) {
          std::cout << "Error raised during execution of HPR:\n" << error.what() << std::endl;
      }
  
      // Compare the results of reference implementation and DPC++ implementation.
      auto A_accessor = A_buffer.template get_access<access::mode::read>();
      bool good = check_equal_matrix(A_accessor, A_ref, layout, n, n, n, n, std::cout);
  
      return (int)good;
  }
  
  class HprTests : public ::testing::TestWithParam<std::tuple<sycl::device *, oneapi::mkl::layout>> {
  };
  
  TEST_P(HprTests, ComplexSinglePrecision) {
      float alpha(2.0);
      EXPECT_TRUEORSKIP((test<std::complex<float>, float>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::lower, 30, alpha, 2)));
      EXPECT_TRUEORSKIP((test<std::complex<float>, float>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::upper, 30, alpha, 2)));
      EXPECT_TRUEORSKIP(
          (test<std::complex<float>, float>(std::get<0>(GetParam()), std::get<1>(GetParam()),
                                            oneapi::mkl::uplo::lower, 30, alpha, -2)));
      EXPECT_TRUEORSKIP(
          (test<std::complex<float>, float>(std::get<0>(GetParam()), std::get<1>(GetParam()),
                                            oneapi::mkl::uplo::upper, 30, alpha, -2)));
      EXPECT_TRUEORSKIP((test<std::complex<float>, float>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::lower, 30, alpha, 1)));
      EXPECT_TRUEORSKIP((test<std::complex<float>, float>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::upper, 30, alpha, 1)));
  }
  
  TEST_P(HprTests, ComplexDoublePrecision) {
      double alpha(2.0);
      EXPECT_TRUEORSKIP((test<std::complex<double>, double>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::lower, 30, alpha, 2)));
      EXPECT_TRUEORSKIP((test<std::complex<double>, double>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::upper, 30, alpha, 2)));
      EXPECT_TRUEORSKIP(
          (test<std::complex<double>, double>(std::get<0>(GetParam()), std::get<1>(GetParam()),
                                              oneapi::mkl::uplo::lower, 30, alpha, -2)));
      EXPECT_TRUEORSKIP(
          (test<std::complex<double>, double>(std::get<0>(GetParam()), std::get<1>(GetParam()),
                                              oneapi::mkl::uplo::upper, 30, alpha, -2)));
      EXPECT_TRUEORSKIP((test<std::complex<double>, double>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::lower, 30, alpha, 1)));
      EXPECT_TRUEORSKIP((test<std::complex<double>, double>(
          std::get<0>(GetParam()), std::get<1>(GetParam()), oneapi::mkl::uplo::upper, 30, alpha, 1)));
  }
  
  INSTANTIATE_TEST_SUITE_P(HprTestSuite, HprTests,
                           ::testing::Combine(testing::ValuesIn(devices),
                                              testing::Values(oneapi::mkl::layout::column_major,
                                                              oneapi::mkl::layout::row_major)),
                           ::LayoutDeviceNamePrint());
  
  } // anonymous namespace
  