cavis/libnd4j/include/array/impl/ConstantDescriptor.cpp

100 lines
3.3 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 raver119@gmail.com
//
#include <array/ConstantDescriptor.h>
#include <array/DataTypeUtils.h>
#include <stdexcept>
namespace sd {
ConstantDescriptor::ConstantDescriptor(double* values, int length) {
for (int e = 0; e < length; e++)
_floatValues.emplace_back(values[e]);
}
ConstantDescriptor::ConstantDescriptor(Nd4jLong const* values, int length) {
for (int e = 0; e < length; e++)
_integerValues.emplace_back(values[e]);
}
ConstantDescriptor::ConstantDescriptor(std::initializer_list<double> values) {
_floatValues = values;
}
ConstantDescriptor::ConstantDescriptor(std::vector<Nd4jLong> &values) {
_integerValues = values;
}
ConstantDescriptor::ConstantDescriptor(std::vector<double> &values) {
_floatValues = values;
}
// equal to operator
bool ConstantDescriptor::operator==(const ConstantDescriptor &other) const {
return std::tie(_floatValues, _integerValues) == std::tie(other._floatValues, other._integerValues);
}
// less than operator
bool ConstantDescriptor::operator<(const ConstantDescriptor &other) const {
return std::tie(_floatValues, _integerValues) < std::tie(other._floatValues, other._integerValues);
}
bool ConstantDescriptor::isInteger() const {
return !_integerValues.empty();
}
bool ConstantDescriptor::isFloat() const {
return !_floatValues.empty();
}
const std::vector<Nd4jLong>& ConstantDescriptor::integerValues() const {
return _integerValues;
}
const std::vector<double>& ConstantDescriptor::floatValues() const {
return _floatValues;
}
Nd4jLong ConstantDescriptor::length() const {
return isInteger() ? _integerValues.size() : isFloat() ? _floatValues.size() : 0L;
}
}
namespace std {
size_t hash<sd::ConstantDescriptor>::operator()(const sd::ConstantDescriptor &k) const {
using std::hash;
// Compute individual hash values for first,
// second and third and combine them using XOR
// and bit shifting:
size_t hashVal = 0;
size_t i = 0;
if (k.isInteger()) {
for (auto v: k.integerValues()) {
hashVal ^= std::hash<Nd4jLong>()(v) + 0x9e3779b9 + (hashVal << 6) + (hashVal >> 2);
}
}
else {
for (auto v: k.floatValues()) {
hashVal ^= std::hash<double>()(v) + 0x9e3779b9 + (hashVal << 6) + (hashVal >> 2);
}
}
return hashVal;
}
}