Generic
Definition
Assembly: Numerics.NET.Generic (in Numerics.NET.Generic.dll) Version: 9.0.3
Overload List
| LUDecompose( | |
| LUDecompose( | |
| LUDecompose( | ZGETRF computes an LU decomposition of a general M-by-N matrix A using partial pivoting with row interchanges. The decomposition has the form A = P * L * U. where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n). This is the right-looking Level 3 BLAS version of the algorithm. |
| LUDecompose( | ZGETRF computes an LU decomposition of a general M-by-N matrix A using partial pivoting with row interchanges. The decomposition has the form A = P * L * U. where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n). This is the right-looking Level 3 BLAS version of the algorithm. |
| LUDecompose( | ZGETRF computes an LU decomposition of a general M-by-N matrix A using partial pivoting with row interchanges. The decomposition has the form A = P * L * U. where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n). This is the right-looking Level 3 BLAS version of the algorithm. |
| LUDecompose( | ZGETRF computes an LU decomposition of a general M-by-N matrix A using partial pivoting with row interchanges. The decomposition has the form A = P * L * U. where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n). This is the right-looking Level 3 BLAS version of the algorithm. |
LUDecompose(Int32, Int32, Span<T>, Int32, Span<Int32>, Int32)
ZGETRF computes an LU decomposition of a general M-by-N matrix A using partial pivoting with row interchanges.
The decomposition has the form
A = P * L * U.
where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).
This is the right-looking Level 3 BLAS version of the algorithm.
public override void LUDecompose(
int m,
int n,
Span<T> a,
int lda,
Span<int> ipiv,
out int info
)Parameters
- m Int32
- An integer specifying the number of rows of the matrix a. Must be greater than or equal to zero.
- n Int32
- An integer specifying the number of columns of the matrix a. Must be greater than or equal to zero.
- a Span<T>
- complex array specifying the m-by-n matrix to be factored. On exit, the factors L and U from the decomposition A = P*L*U; the unit diagonal elements of L are not stored.
- lda Int32
- The leading dimension of the matrix a.
- ipiv Span<Int32>
- Integer array of length min(m,n) that will hold the pivot indexes. Row i of the matrix was interchanged with row ipiv[i].
- info Int32
- Reference to an integer containing a result code. Zero indicates success. Greater than zero indicates U(i,i) is exactly zero. The decomposition has been completed, but the factor U is exactly singular, and division by zero will occur if it is used to solve a system of equations.
LUDecompose(Int32, Int32, Span<Complex<T>>, Int32, Span<Int32>, Int32)
ZGETRF computes an LU decomposition of a general M-by-N matrix A using partial pivoting with row interchanges.
The decomposition has the form
A = P * L * U.
where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).
This is the right-looking Level 3 BLAS version of the algorithm.
public override void LUDecompose(
int m,
int n,
Span<Complex<T>> a,
int lda,
Span<int> ipiv,
out int info
)Parameters
- m Int32
- An integer specifying the number of rows of the matrix a. Must be greater than or equal to zero.
- n Int32
- An integer specifying the number of columns of the matrix a. Must be greater than or equal to zero.
- a Span<Complex<T>>
- complex array specifying the m-by-n matrix to be factored. On exit, the factors L and U from the decomposition A = P*L*U; the unit diagonal elements of L are not stored.
- lda Int32
- The leading dimension of the matrix a.
- ipiv Span<Int32>
- Integer array of length min(m,n) that will hold the pivot indexes. Row i of the matrix was interchanged with row ipiv[i].
- info Int32
- Reference to an integer containing a result code. Zero indicates success. Greater than zero indicates U(i,i) is exactly zero. The decomposition has been completed, but the factor U is exactly singular, and division by zero will occur if it is used to solve a system of equations.