62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
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/*******************************************************************************
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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)
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//
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#include <system/op_boilerplate.h>
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#if NOT_EXCLUDED(OP_polygamma)
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#include <ops/declarable/CustomOperations.h>
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#include <ops/declarable/helpers/gammaMathFunc.h>
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namespace sd {
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namespace ops {
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CONFIGURABLE_OP_IMPL(polygamma, 2, 1, false, 0, 0) {
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auto n = INPUT_VARIABLE(0);
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auto x = INPUT_VARIABLE(1);
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auto output = OUTPUT_VARIABLE(0);
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REQUIRE_TRUE(n->isSameShape(x), 0, "POLYGAMMA op: two input arrays n and x must have the same shapes, but got n=%s and x=%s instead !", ShapeUtils::shapeAsString(n).c_str(), ShapeUtils::shapeAsString(x).c_str());
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Nd4jLong arrLen = n->lengthOf();
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// FIXME: this shit should be single op call, not a loop!
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auto nNegative = n->reduceNumber(sd::reduce::IsNegative, nullptr);
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auto xPositive = x->reduceNumber(sd::reduce::IsPositive, nullptr);
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bool nPositiveFlag = !nNegative.e<bool>(0); // require all n >= 0
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bool xPositiveFlag = xPositive.e<bool>(0); // require all x > 0
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REQUIRE_TRUE(nPositiveFlag, 0, "POLYGAMMA op: all elements of n array must be >= 0 !");
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REQUIRE_TRUE(xPositiveFlag, 0, "POLYGAMMA op: all elements of x array must be > 0 !");
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helpers::polyGamma(block.launchContext(), *n, *x, *output);
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return Status::OK();
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}
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DECLARE_SYN(polyGamma, polygamma);
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DECLARE_SYN(PolyGamma, polygamma);
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DECLARE_TYPES(polygamma) {
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getOpDescriptor()
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->setAllowedInputTypes({ALL_FLOATS})
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->setSameMode(true);
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}
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}
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}
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#endif
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