new_contents: import numpy as np
  import unittest
  
  from numba import void, uint32, int32, jit, uint64, int64, typeof, bool_
  
  @jit(void(uint32[:], uint32, uint32))
  def prng(X, A, C):
      for i in range(X.shape[0]):
          for j in range(100):
              v = (A * X[i] + C)
              X[i] = v
  
  @jit(uint32())
  def unsigned_literal():
      return abs(0xFFFFFFFF)
  
  @jit(int64())
  def unsigned_literal_64():
      return 0x100000000
  
  class Test(unittest.TestCase):
      def test_prng(self):
          N = 100
          A = 1664525
          C = 1013904223
          X0 = np.arange(N, dtype=np.uint32)
          X1 = X0.copy()
          prng.py_func(X0, A, C)
          prng(X1, A, C)
          self.assertTrue(np.all(X1 >= 0))
          self.assertTrue(np.all(X0 == X1))
  
      def test_unsigned_literal(self):
          got = unsigned_literal()
          expect = abs(0xFFFFFFFF)
          self.assertEqual(expect, got)
  
      def test_unsigned_literal_64(self):
          got = unsigned_literal_64()
          expect = 0x100000000
          self.assertEqual(expect, got)
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: Add tests for unsigned arithmetic