312-Assignment-Test/test_utils.cpp at master · quyin/312-Assignment-Test · GitHub

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// Implementations of test util functions.
// TA: Yin Qu (me.yin.qu@gmail.com)

#include <sstream>
#include "test_utils.h"

using namespace std;

int to_uint(bool* a, int len) {
  int n = 0;
  int d = 1;
  for (int i = 0; i < len; ++i) {
    if (a[i]) {
      n += d;
    }
    d = d << 1;
  }
  return n;
}

int to_int(bool* a, int len) {
  int n = to_uint(a, len);
  return a[len - 1] ? (n - (1 << len)) : n;
}

int to_uint8(bool* a) {
  return to_uint(a, 8);
}

int to_uint16(bool* a) {
  return to_uint(a, 16);
}

int to_int8(bool* a) {
  return to_int(a, 8);
}

int to_int16(bool* a) {
  return to_int(a, 16);
}

bool* to_bits(bool* output, int num, int len) {
  for (int i = 0; i < len; ++i) {
    if (num & 1) {
      output[i] = true;
    } else {
      output[i] = false;
    }
    num = num >> 1;
  }
  return output;
}

bool* to_bits8(bool* output, int num) {
  return to_bits(output, num, 8);
}

bool* to_bits16(bool* output, int num) {
  return to_bits(output, num, 16);
}

bool* str_to_bits8(bool* output, const char* num) {
  for (int i = 0; i < 8; ++i) {
    if (num[7 - i] == '1') {
      output[i] = true;
    } else {
      output[i] = false;
    }
  }
  return output;
}

bool bitwise_eq(bool* v1, bool* v2, int len) {
  for (int i = 0; i < len; ++i) {
    if (v1[i] != v2[i]) {
      return false;
    }
  }
  return true;
}

string to_str(bool* v, int len) {
  string s;
  for (int i = 0; i < len; ++i) {
    s = (v[i] ? '1' : '0') + s;
  }
  int uint = to_uint(v, len);
  int sint = to_int(v, len);

  ostringstream oss;
  oss << s << " = " << sint << " = " << uint << "U";
  return oss.str();
}