tf.add_check_numerics_ops()See the guide: Control Flow > Debugging Operations
Connect a check_numerics to every floating point tensor.
check_numerics operations themselves are added for each half, float, or double tensor in the graph. For all ops in the graph, the check_numerics op for all of its (half, float, or double) inputs is guaranteed to run before the check_numerics op on any of its outputs.
A group op depending on all check_numerics ops added.
Defined in tensorflow/python/ops/numerics.py.
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Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/api_docs/python/tf/add_check_numerics_ops