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/*-
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://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.
*
*
*/
package org.nd4j.linalg.api.ops.impl.transforms;
import org.apache.commons.math3.util.FastMath;
import org.nd4j.linalg.api.complex.IComplexNumber;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.BaseTransformOp;
import org.nd4j.linalg.api.ops.Op;
import org.nd4j.linalg.util.ComplexUtil;
/**
* Pow function
*
* @author Adam Gibson
*/
public class Pow extends BaseTransformOp {
private double pow;
public Pow() {}
public Pow(INDArray x, INDArray z, double pow) {
super(x, z);
this.pow = pow;
init(x, null, z, x.lengthLong());
}
public Pow(INDArray x, INDArray z, long n, double pow) {
super(x, z, n);
this.pow = pow;
init(x, null, z, n);
}
public Pow(INDArray x, INDArray y, INDArray z, long n, double pow) {
super(x, y, z, n);
this.pow = pow;
init(x, y, z, n);
}
public Pow(INDArray x, double pow) {
super(x);
this.pow = pow;
init(x, null, x, x.lengthLong());
}
@Override
public int opNum() {
return 7;
}
@Override
public String name() {
return "pow";
}
@Override
public IComplexNumber op(IComplexNumber origin, double other) {
return ComplexUtil.pow(origin, pow);
}
@Override
public IComplexNumber op(IComplexNumber origin, float other) {
return ComplexUtil.pow(origin, pow);
}
@Override
public IComplexNumber op(IComplexNumber origin, IComplexNumber other) {
return ComplexUtil.pow(origin, pow);
}
@Override
public float op(float origin, float other) {
return (float) FastMath.pow(origin, pow);
}
@Override
public double op(double origin, double other) {
return FastMath.pow(origin, pow);
}
@Override
public double op(double origin) {
return FastMath.pow(origin, pow);
}
@Override
public float op(float origin) {
return (float) FastMath.pow(origin, pow);
}
@Override
public IComplexNumber op(IComplexNumber origin) {
return ComplexUtil.pow(origin, pow);
}
@Override
public Op opForDimension(int index, int dimension) {
INDArray xAlongDimension = x.vectorAlongDimension(index, dimension);
if (y() != null)
return new Pow(xAlongDimension, y.vectorAlongDimension(index, dimension),
z.vectorAlongDimension(index, dimension), xAlongDimension.length(), pow);
else
return new Pow(xAlongDimension, z.vectorAlongDimension(index, dimension), xAlongDimension.length(), pow);
}
@Override
public Op opForDimension(int index, int... dimension) {
INDArray xAlongDimension = x.tensorAlongDimension(index, dimension);
if (y() != null)
return new Pow(xAlongDimension, y.tensorAlongDimension(index, dimension),
z.tensorAlongDimension(index, dimension), xAlongDimension.length(), pow);
else
return new Pow(xAlongDimension, z.tensorAlongDimension(index, dimension), xAlongDimension.length(), pow);
}
@Override
public void init(INDArray x, INDArray y, INDArray z, long n) {
super.init(x, y, z, n);
this.extraArgs = new Object[] {pow};
}
}