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keras-contrib/tests/keras_contrib/test_constraints.py
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Python

import pytest
import numpy as np
from numpy.testing import assert_allclose
from keras import backend as K
from keras_contrib import backend as KC
from keras_contrib import constraints
test_values = [0.1, 0.5, 3, 8, 1e-7]
np.random.seed(3537)
example_array = np.random.random((100, 100)) * 100. - 50.
example_array[0, 0] = 0. # 0 could possibly cause trouble
def test_clip():
clip_instance = constraints.clip()
clipped = clip_instance(K.variable(example_array))
assert(np.max(np.abs(K.eval(clipped))) <= K.cast_to_floatx(0.01))
clip_instance = constraints.clip(0.1)
clipped = clip_instance(K.variable(example_array))
assert(np.max(np.abs(K.eval(clipped))) <= K.cast_to_floatx(0.1))
if __name__ == '__main__':
pytest.main([__file__])