70 lines
2.7 KiB
C++
70 lines
2.7 KiB
C++
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// @author GS <sgazeos@gmail.com>
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//
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#include <ops/declarable/helpers/bds.h>
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#include <Status.h>
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namespace nd4j {
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namespace ops {
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namespace helpers {
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Nd4jStatus bdsFunctor(nd4j::LaunchContext * context, NDArray* x_shape, NDArray* y_shape, NDArray* output) {
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if (x_shape->lengthOf() == 1 || y_shape->lengthOf() == 1) {// except case
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auto lesser = (x_shape->lengthOf() == 1 ? x_shape: y_shape);
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auto greater = (x_shape->lengthOf() == 1 ? y_shape: x_shape);
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output->assign(greater);
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output->p(greater->lengthOf() - 1, lesser->e(0L));
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}
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else {
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//int e = 0, x = 0, y = 0;
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Nd4jLong xLen = x_shape->lengthOf();
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Nd4jLong yLen = y_shape->lengthOf();
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Nd4jLong zLen = output->lengthOf();
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Nd4jLong borderLen = nd4j::math::nd4j_min(xLen, yLen);
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for (Nd4jLong e = 0; e < zLen; e++) {
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Nd4jLong val;
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if (e < borderLen) {
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val = nd4j::math::nd4j_max(x_shape->e<Nd4jLong>(e), y_shape->e<Nd4jLong>(e));
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} else if (e < xLen) {
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val = nd4j::math::nd4j_max(x_shape->e<Nd4jLong>(e), y_shape->e<Nd4jLong>(yLen - 1));
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} else {
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val = nd4j::math::nd4j_max(x_shape->e<Nd4jLong>(xLen - 1), y_shape->e<Nd4jLong>(e));
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}
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// if (e)
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// if (val != output->e<Nd4jLong>(e - 1)) {
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// nd4j_printf(
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// "broadcast_dynamic_shape: Input shapes should be compatible, but %lld and %lld were given.\n",
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// val, output->e<Nd4jLong>(e - 1));
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// return Status::CODE(ND4J_STATUS_VALIDATION, "broadcast_dynamic_shape: BDS validation failed!");
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// }
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output->p(e, val);
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}
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}
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return Status::OK();
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}
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}
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}
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} |