/******************************************************************************
Copyright (c) 2018 Advanced Micro Devices, Inc. All rights reserved.

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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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*******************************************************************************/

#ifndef TEST_UTIL_HELPER_FUNCS_H_
#define TEST_UTIL_HELPER_FUNCS_H_

#include <time.h>
#include <cmath>
#include <iostream>
#include <sstream>
#include <string>

static inline void Error(std::string error_msg) {
  std::cerr << "Error: " << error_msg << std::endl;
}

template <typename T>
void PrintArray(const std::string header, const T* data, const int width, const int height) {
  std::clog << header << " :\n";
  for (int i = 0; i < height; i++) {
    std::clog << "> ";
    for (int j = 0; j < width; j++) {
      std::clog << data[i * width + j] << " ";
    }
    std::clog << "\n";
  }
}

template <typename T>
bool FillRandom(T* array_ptr, const int width, const int height, const T range_min,
                const T range_max, unsigned int seed = 123) {
  if (!array_ptr) {
    Error("Cannot fill array. NULL pointer.");
    return false;
  }

  if (!seed) seed = (unsigned int)time(NULL);

  srand(seed);
  double range = double(range_max - range_min) + 1.0;

  /* random initialisation of input */
  for (int i = 0; i < height; i++)
    for (int j = 0; j < width; j++) {
      int index = i * width + j;
      array_ptr[index] = range_min + T(range * rand() / (RAND_MAX + 1.0));
    }

  return true;
}

template <typename T> T RoundToPowerOf2(T val) {
  int bytes = sizeof(T);

  val--;
  for (int i = 0; i < bytes; i++) val |= val >> (1 << i);
  val++;

  return val;
}

template <typename T> bool IsPowerOf2(T val) {
  long long long_val = val;
  return (((long_val & (-long_val)) - long_val == 0) && (long_val != 0));
}

#endif  // TEST_UTIL_HELPER_FUNCS_H_