org.nd4j.linalg.api.ndarray.BaseShapeInfoProvider Maven / Gradle / Ivy
package org.nd4j.linalg.api.ndarray;
import org.nd4j.linalg.primitives.Pair;
import org.nd4j.linalg.api.buffer.DataBuffer;
import org.nd4j.linalg.api.shape.Shape;
import org.nd4j.linalg.factory.Nd4j;
import java.util.concurrent.atomic.AtomicLong;
/**
* @author [email protected]
*/
public abstract class BaseShapeInfoProvider implements ShapeInfoProvider {
protected AtomicLong bytes = new AtomicLong(0);
/**
* This method creates shapeInformation buffer, based on shape being passed in
*
* @param shape
* @return
*/
@Override
public Pair createShapeInformation(int[] shape) {
char order = Nd4j.order();
return createShapeInformation(shape, order);
}
/**
* This method creates shapeInformation buffer, based on shape & order being passed in
*
* @param shape
* @param order
* @return
*/
@Override
public Pair createShapeInformation(int[] shape, char order) {
int[] stride = Nd4j.getStrides(shape, order);
// this won't be view, so ews is 1
int ews = 1;
return createShapeInformation(shape, stride, 0, ews, order);
}
@Override
public Pair createShapeInformation(int[] shape, int[] stride, long offset, int elementWiseStride,
char order) {
DataBuffer buffer = Shape.createShapeInformation(shape, stride, offset, elementWiseStride, order);
buffer.setConstant(true);
return Pair.create(buffer, buffer.asInt());
}
@Override
public long getCachedBytes() {
return bytes.get();
}
}