text: /* ************************************************************************
   * Copyright 2018-2020 Advanced Micro Devices, Inc.
   * ************************************************************************ */
  
  #include "cblas_interface.hpp"
  #include "flops.hpp"
  #include "near.hpp"
  #include "norm.hpp"
  #include "rocblas.hpp"
  #include "rocblas_init.hpp"
  #include "rocblas_math.hpp"
  #include "rocblas_random.hpp"
  #include "rocblas_test.hpp"
  #include "rocblas_vector.hpp"
  #include "unit.hpp"
  #include "utility.hpp"
  
  template <typename T, bool CONJ = false>
  void testing_dot_bad_arg(const Arguments& arg)
  {
      rocblas_int         N         = 100;
      rocblas_int         incx      = 1;
      rocblas_int         incy      = 1;
      static const size_t safe_size = 100; //  arbitrarily set to 100
  
      rocblas_local_handle handle;
      device_vector<T>     dx(safe_size);
      device_vector<T>     dy(safe_size);
      device_vector<T>     d_rocblas_result(1);
      if(!dx || !dy || !d_rocblas_result)
      {
          CHECK_HIP_ERROR(hipErrorOutOfMemory);
          return;
      }
  
      CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_device));
  
      EXPECT_ROCBLAS_STATUS(
          (CONJ ? rocblas_dotc<T>
                : rocblas_dot<T>)(handle, N, nullptr, incx, dy, incy, d_rocblas_result),
          rocblas_status_invalid_pointer);
      EXPECT_ROCBLAS_STATUS(
          (CONJ ? rocblas_dotc<T>
                : rocblas_dot<T>)(handle, N, dx, incx, nullptr, incy, d_rocblas_result),
          rocblas_status_invalid_pointer);
      EXPECT_ROCBLAS_STATUS(
          (CONJ ? rocblas_dotc<T> : rocblas_dot<T>)(handle, N, dx, incx, dy, incy, nullptr),
          rocblas_status_invalid_pointer);
      EXPECT_ROCBLAS_STATUS(
          (CONJ ? rocblas_dotc<T> : rocblas_dot<T>)(nullptr, N, dx, incx, dy, incy, d_rocblas_result),
          rocblas_status_invalid_handle);
  }
  
  template <typename T>
  void testing_dotc_bad_arg(const Arguments& arg)
  {
      testing_dot_bad_arg<T, true>(arg);
  }
  
  template <typename T, bool CONJ = false>
  void testing_dot(const Arguments& arg)
  {
      rocblas_int N    = arg.N;
      rocblas_int incx = arg.incx;
      rocblas_int incy = arg.incy;
  
      T cpu_result;
      T rocblas_result_1;
      T rocblas_result_2;
  
      double               rocblas_error_1;
      double               rocblas_error_2;
      rocblas_local_handle handle;
  
      // check to prevent undefined memmory allocation error
      if(N <= 0)
      {
          static const size_t safe_size = 100; // arbitrarily set to 100
          device_vector<T>    dx(safe_size);
          device_vector<T>    dy(safe_size);
          device_vector<T>    d_rocblas_result(1);
          if(!dx || !dy || !d_rocblas_result)
          {
              CHECK_HIP_ERROR(hipErrorOutOfMemory);
              return;
          }
  
          CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_device));
          CHECK_ROCBLAS_ERROR(
              (CONJ ? rocblas_dotc<T>
                    : rocblas_dot<T>)(handle, N, dx, incx, dy, incy, d_rocblas_result));
          return;
      }
  
      rocblas_int abs_incx = incx >= 0 ? incx : -incx;
      rocblas_int abs_incy = incy >= 0 ? incy : -incy;
      size_t      size_x   = N * size_t(abs_incx);
      size_t      size_y   = N * size_t(abs_incy);
  
      // allocate memory on device
      device_vector<T> dx(size_x);
      device_vector<T> dy(size_y);
      device_vector<T> d_rocblas_result_2(1);
      if(!dx || !dy || !d_rocblas_result_2)
      {
          CHECK_HIP_ERROR(hipErrorOutOfMemory);
          return;
      }
  
      // Naming: dX is in GPU (device) memory. hK is in CPU (host) memory, plz follow this practice
      host_vector<T> hx(size_x);
      host_vector<T> hy(size_y);
  
      // Initial Data on CPU
      rocblas_seedrand();
      rocblas_init<T>(hx, 1, N, abs_incx);
      rocblas_init<T>(hy, 1, N, abs_incy);
  
      // copy data from CPU to device, does not work for incx != 1
      CHECK_HIP_ERROR(hipMemcpy(dx, hx, sizeof(T) * size_x, hipMemcpyHostToDevice));
      CHECK_HIP_ERROR(hipMemcpy(dy, hy, sizeof(T) * size_y, hipMemcpyHostToDevice));
  
      double gpu_time_used, cpu_time_used;
      double rocblas_gflops, cblas_gflops, rocblas_bandwidth;
  
      if(arg.unit_check || arg.norm_check)
      {
          // GPU BLAS, rocblas_pointer_mode_host
          CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_host));
          CHECK_ROCBLAS_ERROR(
              (CONJ ? rocblas_dotc<T>
                    : rocblas_dot<T>)(handle, N, dx, incx, dy, incy, &rocblas_result_1));
  
          // GPU BLAS, rocblas_pointer_mode_device
          CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_device));
          CHECK_ROCBLAS_ERROR(
              (CONJ ? rocblas_dotc<T>
                    : rocblas_dot<T>)(handle, N, dx, incx, dy, incy, d_rocblas_result_2));
          CHECK_HIP_ERROR(
              hipMemcpy(&rocblas_result_2, d_rocblas_result_2, sizeof(T), hipMemcpyDeviceToHost));
  
          // CPU BLAS
          cpu_time_used = get_time_us();
          (CONJ ? cblas_dotc<T> : cblas_dot<T>)(N, hx, incx, hy, incy, &cpu_result);
          cpu_time_used = get_time_us() - cpu_time_used;
          cblas_gflops  = dot_gflop_count<CONJ, T>(N) / cpu_time_used * 1e6 * 1;
  
          if(arg.unit_check)
          {
              unit_check_general<T>(1, 1, 1, &cpu_result, &rocblas_result_1);
              unit_check_general<T>(1, 1, 1, &cpu_result, &rocblas_result_2);
          }
  
          if(arg.norm_check)
          {
              std::cout << "cpu=" << cpu_result << ", gpu_host_ptr=" << rocblas_result_1
                        << ", gpu_device_ptr=" << rocblas_result_2 << "\n";
  
              rocblas_error_1 = double(rocblas_abs((cpu_result - rocblas_result_1) / cpu_result));
              rocblas_error_2 = double(rocblas_abs((cpu_result - rocblas_result_2) / cpu_result));
          }
      }
  
      if(arg.timing)
      {
          int number_cold_calls = 2;
          int number_hot_calls  = 100;
          CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_host));
  
          for(int iter = 0; iter < number_cold_calls; iter++)
          {
              (CONJ ? rocblas_dotc<T>
                    : rocblas_dot<T>)(handle, N, dx, incx, dy, incy, &rocblas_result_1);
          }
  
          gpu_time_used = get_time_us(); // in microseconds
  
          for(int iter = 0; iter < number_hot_calls; iter++)
          {
              (CONJ ? rocblas_dotc<T>
                    : rocblas_dot<T>)(handle, N, dx, incx, dy, incy, &rocblas_result_1);
          }
  
          gpu_time_used     = (get_time_us() - gpu_time_used) / number_hot_calls;
          rocblas_gflops    = dot_gflop_count<CONJ, T>(N) / gpu_time_used * 1e6 * 1;
          rocblas_bandwidth = (2.0 * N) * sizeof(T) / gpu_time_used / 1e3;
  
          std::cout << "N,incx,incy,rocblas-Gflops,rocblas-GB/s,rocblas-us";
  
          if(arg.norm_check)
              std::cout << ",CPU-Gflops,norm_error_host_ptr,norm_error_dev_ptr";
  
          std::cout << std::endl;
          std::cout << N << "," << incx << "," << incy << "," << rocblas_gflops << ","
                    << rocblas_bandwidth << "," << gpu_time_used;
  
          if(arg.norm_check)
              std::cout << "," << cblas_gflops << "," << rocblas_error_1 << "," << rocblas_error_2;
  
          std::cout << std::endl;
      }
  }
  
  template <typename T>
  void testing_dotc(const Arguments& arg)
  {
      testing_dot<T, true>(arg);
  }
  