Package org.apfloat.aparapi
Class LongAparapiMatrixStrategy
- java.lang.Object
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- org.apfloat.aparapi.LongAparapiMatrixStrategy
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- All Implemented Interfaces:
MatrixStrategy
public class LongAparapiMatrixStrategy extends java.lang.Object implements MatrixStrategy
Matrix transposition in the GPU for thelong
type.- Since:
- 1.8.3
- Version:
- 1.8.3
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Constructor Summary
Constructors Constructor Description LongAparapiMatrixStrategy()
Default constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
permuteToDoubleWidth(ArrayAccess arrayAccess, int n1, int n2)
Permute the rows of the n1 x n2 matrix so that it is shaped like a n1/2 x 2*n2 matrix.void
permuteToHalfWidth(ArrayAccess arrayAccess, int n1, int n2)
Permute the rows of the n1 x n2 matrix so that it is shaped like a 2*n1 x n2/2 matrix.void
transpose(ArrayAccess arrayAccess, int n1, int n2)
Transpose a n1 x n2 matrix.void
transposeSquare(ArrayAccess arrayAccess, int n1, int n2)
Transpose a square n1 x n1 block of n1 x n2 matrix.
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Method Detail
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transpose
public void transpose(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
Description copied from interface:MatrixStrategy
Transpose a n1 x n2 matrix.Both n1 and n2 must be powers of two. Additionally, one of these must be true:
n1 = n2
n1 = 2*n2
n2 = 2*n1- Specified by:
transpose
in interfaceMatrixStrategy
- Parameters:
arrayAccess
- Accessor to the matrix data. This data will be transposed.n1
- Number of rows in the matrix.n2
- Number of columns in the matrix.- Throws:
ApfloatRuntimeException
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transposeSquare
public void transposeSquare(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
Description copied from interface:MatrixStrategy
Transpose a square n1 x n1 block of n1 x n2 matrix.Both n1 and n2 must be powers of two, and n1 <= n2.
- Specified by:
transposeSquare
in interfaceMatrixStrategy
- Parameters:
arrayAccess
- Accessor to the matrix data. This data will be transposed.n1
- Number of rows and columns in the block to be transposed.n2
- Number of columns in the matrix.- Throws:
ApfloatRuntimeException
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permuteToHalfWidth
public void permuteToHalfWidth(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
Description copied from interface:MatrixStrategy
Permute the rows of the n1 x n2 matrix so that it is shaped like a 2*n1 x n2/2 matrix. Logically, the matrix is split in half, and the right half is moved below the left half.Both n1 and n2 must be powers of two. E.g. if the matrix layout is originally as follows:
Matrix before 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Then after this method it is as follows:
Matrix after 0 1 2 3 8 9 10 11 4 5 6 7 12 13 14 15 - Specified by:
permuteToHalfWidth
in interfaceMatrixStrategy
- Parameters:
arrayAccess
- Accessor to the matrix data. This data will be permuted.n1
- Number of rows in the matrix.n2
- Number of columns in the matrix.- Throws:
ApfloatRuntimeException
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permuteToDoubleWidth
public void permuteToDoubleWidth(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
Description copied from interface:MatrixStrategy
Permute the rows of the n1 x n2 matrix so that it is shaped like a n1/2 x 2*n2 matrix. Logically, the matrix is split in half, and the lower half is moved to the right side of the upper half.Both n1 and n2 must be powers of two, and n1 >= 2.
E.g. if the matrix layout is originally as follows:
Matrix before 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Then after this method it is as follows:
Matrix after 0 1 2 3 8 9 10 11 4 5 6 7 12 13 14 15 - Specified by:
permuteToDoubleWidth
in interfaceMatrixStrategy
- Parameters:
arrayAccess
- Accessor to the matrix data. This data will be permuted.n1
- Number of rows in the matrix.n2
- Number of columns in the matrix.- Throws:
ApfloatRuntimeException
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