wehub-resource-sync
119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/* ******************************************************************************
|
|
*
|
|
*
|
|
* 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.
|
|
*
|
|
* See the NOTICE file distributed with this work for additional
|
|
* information regarding copyright ownership.
|
|
* 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
|
|
******************************************************************************/
|
|
|
|
//
|
|
// @author raver119@gmail.com
|
|
//
|
|
|
|
#include <system/op_boilerplate.h>
|
|
#if NOT_EXCLUDED(OP_subtract)
|
|
|
|
#include <ops/declarable/CustomOperations.h>
|
|
#include <ops/declarable/generic/helpers/BroadcastHelper.h>
|
|
|
|
namespace sd {
|
|
namespace ops {
|
|
BROADCASTABLE_OP_IMPL(subtract, 0, 0) {
|
|
auto x = INPUT_VARIABLE(0);
|
|
auto y = INPUT_VARIABLE(1);
|
|
auto z = OUTPUT_VARIABLE(0);
|
|
|
|
BROADCAST_CHECK_EMPTY(x, y, z);
|
|
|
|
auto tZ = BroadcastHelper::broadcastApply(BroadcastOpsTuple::Subtract(), x, y, z);
|
|
if (tZ == nullptr)
|
|
return Status::KERNEL_FAILURE;
|
|
else if (tZ != z) {
|
|
OVERWRITE_RESULT(tZ);
|
|
}
|
|
|
|
return Status::OK;
|
|
}
|
|
DECLARE_SYN(Sub, subtract);
|
|
DECLARE_SYN(sub, subtract);
|
|
|
|
DECLARE_TYPES(subtract) {
|
|
getOpDescriptor()
|
|
->setAllowedInputTypes(0, ANY)
|
|
->setAllowedInputTypes(1, ANY)
|
|
->setAllowedOutputTypes(0, INHERIT);
|
|
}
|
|
|
|
CUSTOM_OP_IMPL(subtract_bp, 3, 2, false, 0, 0) {
|
|
auto x = INPUT_VARIABLE(0);
|
|
auto y = INPUT_VARIABLE(1);
|
|
auto epsNext = INPUT_VARIABLE(2);
|
|
|
|
auto gradX = OUTPUT_VARIABLE(0);
|
|
auto gradY = OUTPUT_VARIABLE(1);
|
|
|
|
if (x->isSameShape(y)) {
|
|
// PWT case case
|
|
epsNext->applyTransform(transform::Neg, gradY);
|
|
gradX->assign(epsNext);
|
|
} else if (y->isScalar()) {
|
|
// scalar case
|
|
auto reduce = epsNext->reduceNumber(reduce::Sum);
|
|
auto tmp = -(*reduce);
|
|
gradY->assign(&tmp);
|
|
gradX->assign(epsNext);
|
|
delete reduce;
|
|
} else {
|
|
// broadcastable
|
|
auto axisX = ShapeUtils::evalBroadcastBackwardAxis(x->shapeInfo(), epsNext->shapeInfo());
|
|
auto axisY = ShapeUtils::evalBroadcastBackwardAxis(y->shapeInfo(), epsNext->shapeInfo());
|
|
|
|
if (axisX.size() > 0) {
|
|
auto sum = epsNext->reduceAlongDimension(reduce::Sum, &axisX);
|
|
gradX->assign(sum);
|
|
delete sum;
|
|
} else
|
|
gradX->assign(epsNext);
|
|
|
|
if (axisY.size() > 0) {
|
|
auto sum = epsNext->reduceAlongDimension(reduce::Sum, &axisY);
|
|
sum->applyTransform(transform::Neg, gradY);
|
|
delete sum;
|
|
} else {
|
|
epsNext->applyTransform(transform::Neg, gradY);
|
|
}
|
|
}
|
|
|
|
return Status::OK;
|
|
}
|
|
|
|
DECLARE_TYPES(subtract_bp) {
|
|
getOpDescriptor()->setAllowedInputTypes(ANY)->setAllowedOutputTypes({ALL_FLOATS});
|
|
}
|
|
|
|
DECLARE_SHAPE_FN(subtract_bp) {
|
|
auto x = inputShape->at(0);
|
|
auto y = inputShape->at(1);
|
|
auto e = inputShape->at(2);
|
|
|
|
// eps always has shape of x
|
|
// grad always has shape of y
|
|
auto shapeList = SHAPELIST(CONSTANT(x), CONSTANT(y));
|
|
|
|
return shapeList;
|
|
}
|
|
} // namespace ops
|
|
} // namespace sd
|
|
|
|
#endif
|