52 lines
2.1 KiB
Plaintext
52 lines
2.1 KiB
Plaintext
/*******************************************************************************
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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 Yurii Shyrma (iuriish@yahoo.com), created on 27.08.2018
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//
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#include <ops/declarable/helpers/range.h>
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namespace nd4j {
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namespace ops {
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namespace helpers {
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template <typename T>
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static __global__ void global_range(void *output, Nd4jLong length, T start, T delta) {
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auto buff = reinterpret_cast<T*>(output);
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const auto tid = blockIdx.x * gridDim.x + threadIdx.x;
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const auto step = gridDim.x * blockDim.x;
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for(Nd4jLong i = tid; i < length; i += step)
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buff[i] = start + i * delta;
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}
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//////////////////////////////////////////////////////////////////////////
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// be careful: outVector must have c-order and ews = 1 !!!
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template <typename T>
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static void _range(nd4j::LaunchContext * context, const NDArray& start, const NDArray& delta, NDArray& outVector) {
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global_range<T><<<512, 512, 2048, *context->getCudaStream()>>>(outVector.getSpecialBuffer(), outVector.lengthOf(), start.e<T>(0), delta.e<T>(0));
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}
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void range(nd4j::LaunchContext * context, const NDArray& start, const NDArray& delta, NDArray& outVector) {
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BUILD_SINGLE_SELECTOR(outVector.dataType(), _range, (context, start, delta, outVector), LIBND4J_TYPES);
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}
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BUILD_SINGLE_TEMPLATE(template void _range, (nd4j::LaunchContext * context, const NDArray& start, const NDArray& delta, NDArray& outVector), LIBND4J_TYPES);
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}
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}
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} |