posv Interface

public interface posv

POSV computes the solution to a complex system of linear equations A * X = B, where A is an N-by-N Hermitian positive definite matrix and X and B are N-by-NRHS matrices. The Cholesky decomposition is used to factor A as A = UH* U, if UPLO = 'U', or A = L * LH, if UPLO = 'L', where U is an upper triangular matrix and L is a lower triangular matrix. The factored form of A is then used to solve the system of equations A * X = B.


Subroutines

public pure subroutine cposv(uplo, n, nrhs, a, lda, b, ldb, info)

Arguments

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

public pure subroutine dposv(uplo, n, nrhs, a, lda, b, ldb, info)

Arguments

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

public pure subroutine sposv(uplo, n, nrhs, a, lda, b, ldb, info)

Arguments

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

public pure subroutine zposv(uplo, n, nrhs, a, lda, b, ldb, info)

Arguments

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

Module Procedures

public interface stdlib_cposv()

Arguments

None

public interface stdlib_dposv()

Arguments

None

public interface stdlib_sposv()

Arguments

None

public interface stdlib_zposv()

Arguments

None