code: def test_atomic_dec(self):
      dtype = cupy.uint32  # atomic_dec only supports 1 dtype
  
      @jit.rawkernel()
      def f(x, out):
          tid = jit.blockDim.x * jit.blockIdx.x + jit.threadIdx.x
          if tid < x.size:
              # = x[tid] if (out[tid] == 0 or out[tid] >= x[tid]) \
              # else out[tid] - 1
              jit.atomic_dec(out, tid, x[tid])
  
      x = cupy.zeros(1024, dtype=dtype)
      out = cupy.arange(1024, dtype=dtype)
      f((32,), (32,), (x, out))
      expected = x
      self._check(out, expected)
  
imports: import numpy
  import pytest
  import cupy
  from cupyx import jit
  from cupy import testing
  from cupy.cuda import device
  from cupy.cuda import runtime
label_desc: Use image node_id 33 for calling the TestRaw obj's underlying member method code with example usage: obj.test_atomic_dec() without return types