62 lines
2.3 KiB
C++
62 lines
2.3 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)
|
|
//
|
|
|
|
#include <op_boilerplate.h>
|
|
#if NOT_EXCLUDED(OP_polygamma)
|
|
|
|
#include <ops/declarable/CustomOperations.h>
|
|
#include <ops/declarable/helpers/gammaMathFunc.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 nNegative = n->reduceNumber(nd4j::reduce::IsNegative, nullptr);
|
|
auto xPositive = x->reduceNumber(nd4j::reduce::IsPositive, nullptr);
|
|
bool nPositiveFlag = !nNegative.e<bool>(0); // require all n >= 0
|
|
bool xPositiveFlag = xPositive.e<bool>(0); // require all x > 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 |