62 lines
2.1 KiB
Python
62 lines
2.1 KiB
Python
# Copyright 2022 The ml_dtypes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from absl.testing import absltest
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from absl.testing import parameterized
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import ml_dtypes
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import numpy as np
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class IinfoTest(parameterized.TestCase):
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def testIinfoInt4(self):
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info = ml_dtypes.iinfo(ml_dtypes.int4)
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self.assertEqual(info.dtype, ml_dtypes.iinfo("int4").dtype)
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self.assertEqual(info.dtype, ml_dtypes.iinfo(np.dtype("int4")).dtype)
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self.assertEqual(info.min, -8)
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self.assertEqual(info.max, 7)
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self.assertEqual(info.dtype, np.dtype(ml_dtypes.int4))
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self.assertEqual(info.bits, 4)
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self.assertEqual(info.kind, "i")
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self.assertEqual(str(info), "iinfo(min=-8, max=7, dtype=int4)")
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def testIInfoUint4(self):
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info = ml_dtypes.iinfo(ml_dtypes.uint4)
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self.assertEqual(info.dtype, ml_dtypes.iinfo("uint4").dtype)
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self.assertEqual(info.dtype, ml_dtypes.iinfo(np.dtype("uint4")).dtype)
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self.assertEqual(info.min, 0)
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self.assertEqual(info.max, 15)
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self.assertEqual(info.dtype, np.dtype(ml_dtypes.uint4))
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self.assertEqual(info.bits, 4)
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self.assertEqual(info.kind, "u")
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self.assertEqual(str(info), "iinfo(min=0, max=15, dtype=uint4)")
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def testIinfoInt8(self):
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# Checks iinfo succeeds for a built-in NumPy type.
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info = ml_dtypes.iinfo(np.int8)
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self.assertEqual(info.min, -128)
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self.assertEqual(info.max, 127)
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def testIinfoNonInteger(self):
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with self.assertRaises(ValueError):
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ml_dtypes.iinfo(np.float32)
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with self.assertRaises(ValueError):
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ml_dtypes.iinfo(np.complex128)
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with self.assertRaises(ValueError):
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ml_dtypes.iinfo(bool)
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if __name__ == "__main__":
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absltest.main()
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