cast.py

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# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from ..functional import cast
from ..module import Module


class Cast(Module):

    def __init__(self, output_dtype: str = 'float32') -> None:
        super().__init__()
        assert output_dtype in ('float32', 'float16', 'bfloat16', 'bool',
                                'int32', 'int8'), TypeError(
                                    "%s is not supported" % output_dtype)
        self.output_dtype = output_dtype

    def forward(self, x):
        return cast(x, self.output_dtype)