title: Smallest Power Of 2 Greater Than Or Equal To N 1
signature: function smallest_power_of_2_greater_than_or_equal_to_n_1(n)
test_code: using Printf
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  function validate_solution(actual, expected)
      return actual == expected
  end
  
  function driver(n, expected)
      try
  
          if validate_solution(PLACEHOLDER_FN_NAME(n), expected)
              return "PASSED";
          end
          return "FAILED";
      catch exception_obj
          return string(Base.typename(typeof(exception_obj)).wrapper);
      end
  end
  
  function main()
      
      result = driver(31, 32);
      @printf("TEST-0...%s\n",result);
      
      result = driver(89, 128);
      @printf("TEST-1...%s\n",result);
      
      result = driver(92, 128);
      @printf("TEST-2...%s\n",result);
      
      result = driver(66, 128);
      @printf("TEST-3...%s\n",result);
      
      result = driver(38, 64);
      @printf("TEST-4...%s\n",result);
      
      result = driver(34, 64);
      @printf("TEST-5...%s\n",result);
      
      result = driver(17, 32);
      @printf("TEST-6...%s\n",result);
      
      result = driver(24, 32);
      @printf("TEST-7...%s\n",result);
      
      result = driver(54, 64);
      @printf("TEST-8...%s\n",result);
      
      result = driver(20, 32);
      @printf("TEST-9...%s\n",result);
      
  end
  
  main()
source_py: def smallest_power_of_2_greater_than_or_equal_to_n_1(n):
      p = 1
      if (n and (not (n & (n - 1)))):
          return n
      while (p < n):
          p <<= 1
      return p
source_cpp: unsigned int smallest_power_of_2_greater_than_or_equal_to_n_1(unsigned int n) {
    unsigned int p = 1;
    if ( n && ! ( n & ( n - 1 ) ) ) return n;
    while ( p < n ) p <<= 1;
    return p;
  }