class_docstr: Test cases for stateless random-number generator operators.
class_docstr_tok: ["Test","cases","for","stateless","random-number","generator","operators","."]
code: def testTruncatedNormal(self, dtype):
      with self.session() as sess, self.test_scope():
          seed_t = array_ops.placeholder(dtypes.int32, shape=[2])
          n = 10000000
          x = stateless.stateless_truncated_normal(
              shape=[n], seed=seed_t, dtype=dtype
          )
          y = sess.run(x, {seed_t: [0x12345678, 0xABCDEF1]})
          is_megacore = (
              "megacore" in os.environ.get("TEST_TARGET", "").lower()
          )
          if dtype == dtypes.float16:
              if is_megacore:
                  mean_atol = 2e-3
              else:
                  mean_atol = 7e-4
          else:
              mean_atol = 5e-4
  
          if dtype == dtypes.float16 and is_megacore:
              median_atol = 2e-3
          else:
              median_atol = 8e-4
  
          if dtype == dtypes.bfloat16:
              variance_rtol = 6e-3
          elif dtype == dtypes.float16:
              variance_rtol = 3e-3
          else:
              variance_rtol = 1e-3
  
          random_test_util.test_truncated_normal(
              self.assertEqual,
              self.assertAllClose,
              n,
              y,
              mean_atol=mean_atol,
              median_atol=median_atol,
              variance_rtol=variance_rtol,
          )
  
imports: import functools
  import os
  from absl.testing import parameterized
  import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.client import device_lib
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.kernel_tests.random import util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gen_stateless_random_ops_v2
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops_util
  from tensorflow.python.ops import stateless_random_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 11 for calling the StatelessRandomOpsTest obj's underlying member method code with example usage: obj.testTruncatedNormal(dtype) without return types