cavis/libnd4j/include/ops/declarable/generic/parity_ops/polygamma.cpp

62 lines
2.2 KiB
C++

/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* 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.
*
* 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 Yurii Shyrma (iuriish@yahoo.com), created on 13.12.2017
//
#include <op_boilerplate.h>
#if NOT_EXCLUDED(OP_polygamma)
#include <ops/declarable/CustomOperations.h>
#include <ops/declarable/helpers/polyGamma.h>
namespace nd4j {
namespace ops {
CONFIGURABLE_OP_IMPL(polygamma, 2, 1, false, 0, 0) {
auto n = INPUT_VARIABLE(0);
auto x = INPUT_VARIABLE(1);
auto output = OUTPUT_VARIABLE(0);
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());
Nd4jLong arrLen = n->lengthOf();
// FIXME: this shit should be single op call, not a loop!
auto nPositive = n->reduceNumber(nd4j::reduce::IsPositive, nullptr);
auto xPositive = x->reduceNumber(nd4j::reduce::IsPositive, nullptr);
bool nPositiveFlag = nPositive.e<bool>(0);
bool xPositiveFlag = xPositive.e<bool>(0);
REQUIRE_TRUE(nPositiveFlag, 0, "POLYGAMMA op: all elements of n array must be > 0 !");
REQUIRE_TRUE(xPositiveFlag, 0, "POLYGAMMA op: all elements of x array must be > 0 !");
helpers::polyGamma(block.launchContext(), *n, *x, *output);
return Status::OK();
}
DECLARE_SYN(polyGamma, polygamma);
DECLARE_SYN(PolyGamma, polygamma);
DECLARE_TYPES(polygamma) {
getOpDescriptor()
->setAllowedInputTypes({ALL_FLOATS})
->setSameMode(true);
}
}
}
#endif