Package org.ejml.sparse.csc.mult

Class ImplMultiplication_DSCC

java.lang.Object

org.ejml.sparse.csc.mult.ImplMultiplication_DSCC

public class ImplMultiplication_DSCC
extends Object

Constructor Summary

Constructors

Constructor	Description
ImplMultiplication_DSCC()

Method Summary

Modifier and Type	Method	Description
static void	addRowsInAInToC(org.ejml.data.DMatrixSparseCSC A, int colA, org.ejml.data.DMatrixSparseCSC C, int colC, int[] w)	Adds rows to C[*,colC] that are in A[*,colA] as long as they are marked in w.
static double	dotInnerColumns(org.ejml.data.DMatrixSparseCSC A, int colA, org.ejml.data.DMatrixSparseCSC B, int colB, @Nullable org.ejml.data.IGrowArray gw, @Nullable org.ejml.data.DGrowArray gx)	Computes the inner product of two column vectors taken from the input matrices.
static void	mult(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	mult(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixSparseCSC B, org.ejml.data.DMatrixSparseCSC C, @Nullable org.ejml.data.IGrowArray gw, @Nullable org.ejml.data.DGrowArray gx)	Performs matrix multiplication.
static void	multAdd(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multAddColA(org.ejml.data.DMatrixSparseCSC A, int colA, double alpha, org.ejml.data.DMatrixSparseCSC C, int mark, double[] x, int[] w)	Performs the operation x = x + A(:,i)*alpha
static void	multAddTransA(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C, org.ejml.data.DGrowArray workArray)
static void	multAddTransAB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multAddTransB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C, org.ejml.data.DGrowArray workArray)
static void	multTransA(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C, org.ejml.data.DGrowArray workArray)
static void	multTransA(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C, org.ejml.data.DGrowArray workArray, org.ejml.ops.DOperatorBinary op)
static void	multTransAB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multTransB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C, org.ejml.data.DGrowArray workArray)

Methods inherited from class java.lang.Object

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

Constructor Details

ImplMultiplication_DSCC

public ImplMultiplication_DSCC()

Method Details

mult

public static void mult(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixSparseCSC B,
org.ejml.data.DMatrixSparseCSC C,
@Nullable
@Nullable org.ejml.data.IGrowArray gw,
@Nullable
@Nullable org.ejml.data.DGrowArray gx)

Performs matrix multiplication. C = A*B

Parameters:

A - Matrix

B - Matrix

C - Storage for results. Data length is increased if increased if insufficient.

gw - (Optional) Storage for internal workspace. Can be null.

gx - (Optional) Storage for internal workspace. Can be null.

multAddColA

public static void multAddColA(org.ejml.data.DMatrixSparseCSC A,
int colA,
double alpha,
org.ejml.data.DMatrixSparseCSC C,
int mark,
double[] x,
int[] w)

Performs the operation x = x + A(:,i)*alpha

NOTE: This is the same as cs_scatter() in csparse.

addRowsInAInToC

public static void addRowsInAInToC(org.ejml.data.DMatrixSparseCSC A,
int colA,
org.ejml.data.DMatrixSparseCSC C,
int colC,
int[] w)

Adds rows to C[*,colC] that are in A[*,colA] as long as they are marked in w. This is used to grow C and colC must be the last filled in column in C.

NOTE: This is the same as cs_scatter if x is null.

Parameters:

A - Matrix

colA - The column in A that is being examined

C - Matrix

colC - Column in C that rows in A are being added to.

w - An array used to indicate if a row in A should be added to C. if w[i] < colC AND i is a row in A[*,colA] then it will be added.

mult

public static void mult(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C)

multAdd

public static void multAdd(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C)

multTransA

public static void multTransA(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C,
org.ejml.data.DGrowArray workArray)

multAddTransA

public static void multAddTransA(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C,
org.ejml.data.DGrowArray workArray)

multTransA

public static void multTransA(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C,
org.ejml.data.DGrowArray workArray,
org.ejml.ops.DOperatorBinary op)

multTransB

public static void multTransB(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C,
org.ejml.data.DGrowArray workArray)

multAddTransB

public static void multAddTransB(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C,
org.ejml.data.DGrowArray workArray)

multTransAB

public static void multTransAB(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C)

multAddTransAB

public static void multAddTransAB(org.ejml.data.DMatrixSparseCSC A,
org.ejml.data.DMatrixRMaj B,
org.ejml.data.DMatrixRMaj C)

dotInnerColumns

public static double dotInnerColumns(org.ejml.data.DMatrixSparseCSC A,
int colA,
org.ejml.data.DMatrixSparseCSC B,
int colB,
@Nullable
@Nullable org.ejml.data.IGrowArray gw,
@Nullable
@Nullable org.ejml.data.DGrowArray gx)

Computes the inner product of two column vectors taken from the input matrices.

dot = A(:,colA)'*B(:,colB)

Parameters:

A - Matrix

colA - Column in A

B - Matrix

colB - Column in B

Returns:

Dot product