# -*- coding: utf-8 -*-
# MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
#
# Copyright (c) 2014-2021 Megvii Inc. All rights reserved.
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
import numpy as np
from .._imperative_rt import make_const
from .._imperative_rt.core2 import SymbolVar, Tensor
[文档]class Const:
def __init__(self, value=None, *, dtype=None, device=None):
self.value = np.asarray(value, dtype=dtype)
self.dtype = dtype
self.device = device
def __call__(self, *reference):
from ...tensor import Tensor
device = self.device
if len(reference) != 0:
reference = reference[0]
assert isinstance(
reference, (SymbolVar, Tensor)
), "Reference should be Tensor or VarNode"
if device is None:
device = reference.device
if isinstance(reference, SymbolVar):
cls = type(reference)
rst = cls(make_const(reference.graph, self.value, device, self.dtype))
return (rst,)
return (Tensor(self.value, self.dtype, self.device, True),)