58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
# Copyright 2023 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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"""Overload of numpy.iinfo to handle dtypes defined in ml_dtypes."""
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from ml_dtypes._ml_dtypes_ext import int4
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from ml_dtypes._ml_dtypes_ext import uint4
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import numpy as np
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_int4_dtype = np.dtype(int4)
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_uint4_dtype = np.dtype(uint4)
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class iinfo: # pylint: disable=invalid-name,missing-class-docstring
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kind: str
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bits: int
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min: int
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max: int
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dtype: np.dtype
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def __init__(self, int_type):
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if int_type == _int4_dtype:
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self.dtype = _int4_dtype
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self.kind = "i"
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self.bits = 4
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self.min = -8
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self.max = 7
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elif int_type == _uint4_dtype:
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self.dtype = _uint4_dtype
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self.kind = "u"
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self.bits = 4
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self.min = 0
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self.max = 15
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else:
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ii = np.iinfo(int_type)
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self.dtype = ii.dtype
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self.kind = ii.kind
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self.bits = ii.bits
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self.min = ii.min
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self.max = ii.max
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def __repr__(self):
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return f"iinfo(min={self.min}, max={self.max}, dtype={self.dtype})"
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def __str__(self):
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return repr(self)
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