org.nd4j.linalg.api.ops.impl.transforms.strict.ATanh Maven / Gradle / Ivy
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* * terms of the Apache License, Version 2.0 which is available at
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package org.nd4j.linalg.api.ops.impl.transforms.strict;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.imports.NoOpNameFoundException;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.BaseTransformStrictOp;
import java.util.Arrays;
import java.util.List;
public class ATanh extends BaseTransformStrictOp {
public ATanh(SameDiff sameDiff, SDVariable i_v) {
this(sameDiff, i_v, false);
}
public ATanh(SameDiff sameDiff, SDVariable i_v, boolean inPlace) {
super(sameDiff, i_v, inPlace);
}
public ATanh() {
}
public ATanh(INDArray x, INDArray z) {
super(x, z);
}
public ATanh(INDArray x) {
super(x);
}
@Override
public int opNum() {
return 52;
}
@Override
public String opName() {
return "atanh";
}
@Override
public String onnxName() {
throw new NoOpNameFoundException("No onnx op opName found for " + opName());
}
@Override
public String tensorflowName() {
return "Atanh";
}
@Override
public List doDiff(List i_v) {
//d(atanh(x))/dx = 1 / (1-x^2)
SDVariable oneMinusX2 = sameDiff.math().square(arg()).rsub(1.0);
SDVariable ret = oneMinusX2.rdiv(1.0).mul(i_v.get(0));
return Arrays.asList(ret);
}
}