Package org.flag4j.operations.dense.real

Class RealDenseOperations

java.lang.Object

org.flag4j.operations.dense.real.RealDenseOperations

public final class RealDenseOperations
extends Object

This class provides low level methods for computing operations on real dense tensors.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	RealDenseOperations()

Method Summary

Modifier and Type	Method	Description
static double[]	add(double[] src, double b)	Adds a scalar to every element of a tensor.
static double[]	add(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the element-wise addition of two tensors.
static void	addEq(double[] src, double b)	Adds a scalar from each entry of this tensor and stores the result in the tensor.
static void	addEq(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes element-wise addition between tensors and stores the result in the first tensor.
static double	prod(double[] src)	Multiplies all entries in a tensor.
static int	prod(int[] src)	Multiplies all entries in a tensor.
static double[]	recip(double[] src)	Computes the reciprocals, element-wise, of a tensor.
static double[]	scalDiv(double[] src, double divisor)	Computes the scalar division of a tensor.
static double[]	sub(double[] src, double b)	Subtracts a scalar from every element of a tensor.
static double[]	sub(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the element-wise subtraction of two tensors.
static void	subEq(double[] src, double b)	Subtracts a scalar from each entry of this tensor and stores the result in the tensor.
static void	subEq(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes element-wise subtraction between tensors and stores the result in the first tensor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RealDenseOperations

private RealDenseOperations()

Method Details

add

public static double[] add(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the element-wise addition of two tensors.

Parameters:

src1 - Entries of first Tensor of the addition.

shape1 - Shape of first tensor.

src2 - Entries of second Tensor of the addition.

shape2 - Shape of second tensor.

Returns:

The element wise addition of two tensors.

Throws:

IllegalArgumentException - If entry arrays are not the same size.

sub

public static double[] sub(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the element-wise subtraction of two tensors.

Parameters:

src1 - Entries of first tensor.

shape1 - Shape of first tensor.

src2 - Entries of second tensor.

shape2 - Shape of second tensor.

Returns:

The element wise subtraction of two tensors.

Throws:

IllegalArgumentException - If entry arrays are not the same size.

sub

public static double[] sub(double[] src,
 double b)

Subtracts a scalar from every element of a tensor.

Parameters:

src - Entries of tensor to add scalar to.

b - Scalar to subtract from tensor.

Returns:

The tensor scalar subtraction.

subEq

public static void subEq(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes element-wise subtraction between tensors and stores the result in the first tensor.

Parameters:

src1 - First tensor in subtraction. Also, where the result will be stored.

shape1 - Shape of the first tensor.

src2 - Second tensor in the subtraction.

shape2 - Shape of the second tensor.

Throws:

IllegalArgumentException - If tensors are not the same shape.

subEq

public static void subEq(double[] src,
 double b)

Subtracts a scalar from each entry of this tensor and stores the result in the tensor.

Parameters:

src - Tensor in subtraction. Also, where the result will be stored.

b - Scalar to subtract.

addEq

public static void addEq(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes element-wise addition between tensors and stores the result in the first tensor.

Parameters:

src1 - First tensor in addition. Also, where the result will be stored.

shape1 - Shape of the first tensor.

src2 - Second tensor in the addition.

shape2 - Shape of the second tensor.

Throws:

IllegalArgumentException - If tensors are not the same shape.

addEq

public static void addEq(double[] src,
 double b)

Adds a scalar from each entry of this tensor and stores the result in the tensor.

Parameters:

src - Tensor in addition. Also, where the result will be stored.

b - Scalar to add.

prod

public static double prod(double[] src)

Multiplies all entries in a tensor.

Parameters:

src - The entries of the tensor.

Returns:

The product of all entries in the tensor.

prod

public static int prod(int[] src)

Multiplies all entries in a tensor.

Parameters:

src - The entries of the tensor.

Returns:

The product of all entries in the tensor.

scalDiv

public static double[] scalDiv(double[] src,
 double divisor)

Computes the scalar division of a tensor.

Parameters:

src - Entries of the tensor.

divisor - Scalar to divide by.

Returns:

The scalar division of the tensor.

recip

public static double[] recip(double[] src)

Computes the reciprocals, element-wise, of a tensor.

Parameters:

src - Elements of the tensor.

Returns:

The element-wise reciprocals of the tensor.

add

public static double[] add(double[] src,
 double b)

Adds a scalar to every element of a tensor.

Parameters:

src - src of tensor to add scalar to.

b - Scalar to add to tensor.

Returns:

The tensor scalar addition.