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package org.nd4j.linalg.api.ops.random.impl;

import lombok.NonNull;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.random.BaseRandomOp;
import org.nd4j.linalg.factory.Nd4j;

/**
 * Linspace/arange Op implementation, generates from..to distribution within Z
 *
 * @author [email protected]
 */
public class Linspace extends BaseRandomOp {
    private double from;
    private double to;

    public Linspace() {
        // no-op
    }

    public Linspace(double from, double to, int length) {
        this(Nd4j.createUninitialized(new int[] {1, length}, Nd4j.order()), from, to);
    }

    public Linspace(@NonNull INDArray z, double from, double to) {
        this.from = from;
        this.to = to;
        init(null, null, z, z.lengthLong());
        this.extraArgs = new Object[] {from, to};
    }

    @Override
    public int opNum() {
        return 4;
    }

    @Override
    public String name() {
        return "linspace";
    }
}