sytf2_rook Interface

public interface sytf2_rook

SYTF2_ROOK computes the factorization of a complex symmetric matrix A using the bounded Bunch-Kaufman ("rook") diagonal pivoting method: A = UDUT or A = LDLT where U (or L) is a product of permutation and unit upper (lower) triangular matrices, U**T is the transpose of U, and D is symmetric and block diagonal with 1-by-1 and 2-by-2 diagonal blocks. This is the unblocked version of the algorithm, calling Level 2 BLAS.


Subroutines

public pure subroutine csytf2_rook(uplo, n, a, lda, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
complex(kind=sp), intent(inout) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

public pure subroutine dsytf2_rook(uplo, n, a, lda, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
real(kind=dp), intent(inout) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

public pure subroutine ssytf2_rook(uplo, n, a, lda, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
real(kind=sp), intent(inout) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

public pure subroutine zsytf2_rook(uplo, n, a, lda, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
complex(kind=dp), intent(inout) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

Module Procedures

public interface stdlib_csytf2_rook()

Arguments

None

public interface stdlib_dsytf2_rook()

Arguments

None

public interface stdlib_ssytf2_rook()

Arguments

None

public interface stdlib_zsytf2_rook()

Arguments

None