63 lines
2.5 KiB
C++
63 lines
2.5 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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#include <ops/declarable/helpers/compare_elem.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 void _compare_elem(NDArray *input, bool isStrictlyIncreasing, bool& output) {
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auto length = shape::length(input->getShapeInfo());
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int elementsPerThread = length / ELEMENT_THRESHOLD;
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int num_threads = nd4j::math::nd4j_max<int>(1, elementsPerThread);
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num_threads = nd4j::math::nd4j_min<int>(num_threads, omp_get_max_threads());
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Nd4jLong sum = 0;
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if(isStrictlyIncreasing) {
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PRAGMA_OMP_PARALLEL_FOR_SIMD_REDUCTION(+:sum)
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for (int i = 0; i < length - 1; i++) {
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auto val0 = input->e<T>(i);
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auto val1 = input->e<T>(i + 1);
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sum += val0 >= val1 ? -1 : 0;
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}
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} else {
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PRAGMA_OMP_PARALLEL_FOR_SIMD_REDUCTION(+:sum)
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for (int i = 0; i < length - 1; i++) {
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auto val0 = input->e<T>(i);
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auto val1 = input->e<T>(i + 1);
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sum += val0 > val1 ? -1 : 0;
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}
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}
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output = (sum > -1);
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}
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void compare_elem(nd4j::LaunchContext * context, NDArray *input, bool isStrictlyIncreasing, bool& output) {
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auto xType = input->dataType();
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BUILD_SINGLE_SELECTOR(xType, _compare_elem, (input, isStrictlyIncreasing, output), LIBND4J_TYPES);
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}
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BUILD_SINGLE_TEMPLATE(template void _compare_elem, (NDArray *A, bool isStrictlyIncreasing, bool& output);, LIBND4J_TYPES);
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}
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}
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}
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