Package org.ejml.dense.row.mult

Class MatrixMatrixMult_DDRM

java.lang.Object
org.ejml.dense.row.mult.MatrixMatrixMult_DDRM
@Generated("org.ejml.dense.row.mult.GenerateMatrixMatrixMult_DDRM")
public class MatrixMatrixMult_DDRM
extends java.lang.Object

This class contains various types of matrix matrix multiplication operations for DMatrix1Row.

Two algorithms that are equivalent can often have very different runtime performance. This is because of how modern computers uses fast memory caches to speed up reading/writing to data. Depending on the order in which variables are processed different algorithms can run much faster than others, even if the number of operations is the same.

Algorithms that are labeled as 'reorder' are designed to avoid caching jumping issues, some times at the cost of increasing the number of operations. This is important for large matrices. The straight forward implementation seems to be faster for small matrices.

Algorithms that are labeled as 'aux' use an auxiliary array of length n. This array is used to create a copy of an out of sequence column vector that is referenced several times. This reduces the number of cache misses. If the 'aux' parameter passed in is null then the array is declared internally.

Typically the straight forward implementation runs about 30% faster on smaller matrices and about 5 times slower on larger matrices. This is all computer architecture and matrix shape/size specific.

DO NOT MODIFY. Automatically generated code created by GenerateMatrixMatrixMult_DDRM

  • Constructor Summary

    Constructors 
    Constructor Description
    MatrixMatrixMult_DDRM()  

  • Method Summary

    Modifier and Type Method Description
    static void mult_aux​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void mult_aux​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void mult_reorder​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void mult_reorder​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void mult_small​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void mult_small​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAdd_aux​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void multAdd_aux​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void multAdd_reorder​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAdd_reorder​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAdd_small​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAdd_small​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransA_reorder​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransA_reorder​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransA_small​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransA_small​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransAB​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransAB​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransAB_aux​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void multAddTransAB_aux​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void multAddTransB​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multAddTransB​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransA_reorder​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransA_reorder​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransA_small​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransA_small​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransAB​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransAB​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransAB_aux​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void multTransAB_aux​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C, @org.jetbrains.annotations.Nullable double[] aux)  
    static void multTransB​(double alpha, org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  
    static void multTransB​(org.ejml.data.DMatrix1Row A, org.ejml.data.DMatrix1Row B, org.ejml.data.DMatrix1Row C)  

    Methods inherited from class java.lang.Object

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