cavis/libnd4j/include/ops/declarable/generic/flow/flow_control_ops.cpp

85 lines
2.6 KiB
C++

/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// Created by raver119 on 13.10.2017.
//
#include <ops/declarable/CustomOperations.h>
#include <system/op_boilerplate.h>
namespace sd {
namespace ops {
/**
* This operation is, basically IF statement
*
* arg_0 is our "signal"
* arg_1 is condition that will determine transition
*/
// TODO: make this op a placeholder too
DIVERGENT_OP_IMPL(Switch, 2, 2, true) {
auto input = INPUT_VARIABLE(0);
auto condition = INPUT_VARIABLE(1);
// we'll store signal to both ends
//STORE_2_RESULTS(*input, *input);
// but we'll ensure only one node is active, and other is disabled
if (condition->e<int>(0) == 0) {
block.setBranch(0);
this->storeResult(block, 0, new NDArray(input->dup()));
} else {
block.setBranch(1);
this->storeResult(block, 1, new NDArray(input->dup()));
}
return Status::OK();
}
DECLARE_SYN(switch, Switch);
DECLARE_SYN(if, Switch);
/**
* This op is a placeholder.
* Actual WHILE implementation is in GraphExecutioner
*/
LOGIC_OP_IMPL(While);
DECLARE_SYN(while, While);
/**
* This op is a placeholder.
* Actual Scope implementation is in Graph and GraphExecutioner
*/
LOGIC_OP_IMPL(Scope);
DECLARE_SYN(scope, Scope);
/**
* This op is a placeholder.
* Actual Conditional implementation is in Graph and GraphExecutioner
*/
LOGIC_OP_IMPL(Conditional);
DECLARE_SYN(cond, Conditional);
/**
* This op is a placeholder
* Actual implementation is in LogicReturn class
*/
LOGIC_OP_IMPL(Return);
DECLARE_SYN(return, Return);
}
}