LASYF: computes a partial factorization of a complex symmetric matrix A using the Bunch-Kaufman diagonal pivoting method. The partial factorization has the form: A = ( I U12 ) ( A11 0 ) ( I 0 ) if UPLO = 'U', or: ( 0 U22 ) ( 0 D ) ( U12**T U22**T ) A = ( L11 0 ) ( D 0 ) ( L11**T L21**T ) if UPLO = 'L' ( L21 I ) ( 0 A22 ) ( 0 I ) where the order of D is at most NB. The actual order is returned in the argument KB, and is either NB or NB-1, or N if N <= NB. Note that U**T denotes the transpose of U. LASYF is an auxiliary routine called by CSYTRF. It uses blocked code (calling Level 3 BLAS) to update the submatrix A11 (if UPLO = 'U') or A22 (if UPLO = 'L').
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| pure subroutine | clasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info) |
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| | la_clasyf |
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| pure subroutine | dlasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info) |
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| | la_dlasyf |
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| | la_qlasyf |
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| pure subroutine | slasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info) |
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| | la_slasyf |
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| | la_wlasyf |
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| pure subroutine | zlasyf (uplo, n, nb, kb, a, lda, ipiv, w, ldw, info) |
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| | la_zlasyf |
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LASYF: computes a partial factorization of a complex symmetric matrix A using the Bunch-Kaufman diagonal pivoting method. The partial factorization has the form: A = ( I U12 ) ( A11 0 ) ( I 0 ) if UPLO = 'U', or: ( 0 U22 ) ( 0 D ) ( U12**T U22**T ) A = ( L11 0 ) ( D 0 ) ( L11**T L21**T ) if UPLO = 'L' ( L21 I ) ( 0 A22 ) ( 0 I ) where the order of D is at most NB. The actual order is returned in the argument KB, and is either NB or NB-1, or N if N <= NB. Note that U**T denotes the transpose of U. LASYF is an auxiliary routine called by CSYTRF. It uses blocked code (calling Level 3 BLAS) to update the submatrix A11 (if UPLO = 'U') or A22 (if UPLO = 'L').
◆ clasyf()
| pure subroutine la_lapack::lasyf::clasyf |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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integer(ilp), intent(in) | nb, |
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integer(ilp), intent(out) | kb, |
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complex(sp), dimension(lda,*), intent(inout) | a, |
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integer(ilp), intent(in) | lda, |
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integer(ilp), dimension(*), intent(out) | ipiv, |
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complex(sp), dimension(ldw,*), intent(out) | w, |
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integer(ilp), intent(in) | ldw, |
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integer(ilp), intent(out) | info ) |
◆ dlasyf()
| pure subroutine la_lapack::lasyf::dlasyf |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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integer(ilp), intent(in) | nb, |
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integer(ilp), intent(out) | kb, |
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real(dp), dimension(lda,*), intent(inout) | a, |
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integer(ilp), intent(in) | lda, |
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integer(ilp), dimension(*), intent(out) | ipiv, |
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real(dp), dimension(ldw,*), intent(out) | w, |
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integer(ilp), intent(in) | ldw, |
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integer(ilp), intent(out) | info ) |
◆ la_clasyf()
| la_lapack::lasyf::la_clasyf |
◆ la_dlasyf()
| la_lapack::lasyf::la_dlasyf |
◆ la_qlasyf()
| la_lapack::lasyf::la_qlasyf |
◆ la_slasyf()
| la_lapack::lasyf::la_slasyf |
◆ la_wlasyf()
| la_lapack::lasyf::la_wlasyf |
◆ la_zlasyf()
| la_lapack::lasyf::la_zlasyf |
◆ slasyf()
| pure subroutine la_lapack::lasyf::slasyf |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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integer(ilp), intent(in) | nb, |
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integer(ilp), intent(out) | kb, |
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real(sp), dimension(lda,*), intent(inout) | a, |
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integer(ilp), intent(in) | lda, |
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integer(ilp), dimension(*), intent(out) | ipiv, |
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real(sp), dimension(ldw,*), intent(out) | w, |
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integer(ilp), intent(in) | ldw, |
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integer(ilp), intent(out) | info ) |
◆ zlasyf()
| pure subroutine la_lapack::lasyf::zlasyf |
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character, intent(in) | uplo, |
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integer(ilp), intent(in) | n, |
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integer(ilp), intent(in) | nb, |
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integer(ilp), intent(out) | kb, |
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complex(dp), dimension(lda,*), intent(inout) | a, |
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integer(ilp), intent(in) | lda, |
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integer(ilp), dimension(*), intent(out) | ipiv, |
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complex(dp), dimension(ldw,*), intent(out) | w, |
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integer(ilp), intent(in) | ldw, |
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integer(ilp), intent(out) | info ) |
The documentation for this interface was generated from the following file:
