cavis/libnd4j/include/ops/specials.h

86 lines
3.4 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
******************************************************************************/
//
// Created by raver119 on 24.04.17.
//
#ifndef LIBND4J_SPECIALS_H
#define LIBND4J_SPECIALS_H
#ifdef __CUDACC__
#define ELEMENT_THRESHOLD 8192
#define TAD_THRESHOLD 2
#endif
#include <pointercast.h>
#include <vector>
namespace nd4j {
class NDArray;
//FIXME: get rid of this redefinition
typedef union
{
float f_;
int i_;
} FloatBits2;
class ND4J_EXPORT SpecialTypeConverter {
public:
template<typename S, typename T>
static void convertGeneric(Nd4jPointer * extras, void *dx, Nd4jLong N, void *dz);
};
template <typename T>
class ND4J_EXPORT SpecialMethods {
public:
static void concatCpuGeneric(const std::vector<NDArray*>& inArrs, NDArray& output, const int axis);
static void concatCpuGeneric(int dimension, int numArrays, Nd4jPointer *data, Nd4jPointer *inputShapeInfo, void *result, Nd4jLong *resultShapeInfo);
static void accumulateGeneric(void **x, void *z, Nd4jLong *zShapeInfo, int n, const Nd4jLong length);
static void averageGeneric(void **x, void *z, Nd4jLong *zShapeInfo, int n, const Nd4jLong length, bool propagate);
static Nd4jLong getPosition(Nd4jLong *xShapeInfo, Nd4jLong index);
static void quickSort_parallel_internal(T* array, Nd4jLong *xShapeInfo, int left, int right, int cutoff, bool descending);
static void quickSort_parallel(void* array, Nd4jLong *xShapeInfo, Nd4jLong lenArray, int numThreads, bool descending);
static int nextPowerOf2(int number);
static int lastPowerOf2(int number);
static void sortGeneric(void *x, Nd4jLong *xShapeInfo, bool descending);
static void sortTadGeneric(void *x, Nd4jLong *xShapeInfo, int *dimension, int dimensionLength, Nd4jLong *tadShapeInfo, Nd4jLong *tadOffsets, bool descending);
static void decodeBitmapGeneric(void *dx, Nd4jLong N, void *dz, Nd4jLong *zShapeInfo);
static Nd4jLong encodeBitmapGeneric(void *dx, Nd4jLong *zShapeInfo, Nd4jLong N, int *dz, float threshold);
};
template <typename X, typename Y>
class ND4J_EXPORT DoubleMethods{
public:
static void sortByKey(void *vx, Nd4jLong *xShapeInfo, void *vy, Nd4jLong *yShapeInfo, bool descending);
static void sortByValue(void *vx, Nd4jLong *xShapeInfo, void *vy, Nd4jLong *yShapeInfo, bool descending);
static void sortTadByKey(void *vx, Nd4jLong *xShapeInfo, void *vy, Nd4jLong *yShapeInfo, int *dimension, int dimensionLength, bool descending);
static void sortTadByValue(void *vx, Nd4jLong *xShapeInfo, void *vy, Nd4jLong *yShapeInfo, int *dimension, int dimensionLength, bool descending);
};
}
#endif //LIBND4J_SPECIALS_H