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tf.keras.backend.floatx

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Returns the default float type, as a string.

E.g. 'float16', 'float32', 'float64'.

Returns
String, the current default float type.

Example:

keras.backend.floatx() >>> 'float32'

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https://www.tensorflow.org/versions/r1.15/api_docs/python/tf/keras/backend/floatx