gbsv Interface

public interface gbsv

GBSV computes the solution to a complex system of linear equations A * X = B, where A is a band matrix of order N with KL subdiagonals and KU superdiagonals, and X and B are N-by-NRHS matrices. The LU decomposition with partial pivoting and row interchanges is used to factor A as A = L * U, where L is a product of permutation and unit lower triangular matrices with KL subdiagonals, and U is upper triangular with KL+KU superdiagonals. The factored form of A is then used to solve the system of equations A * X = B.


Subroutines

public pure subroutine cgbsv(n, kl, ku, nrhs, ab, ldab, ipiv, b, ldb, info)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: kl
integer(kind=ilp), intent(in) :: ku
integer(kind=ilp), intent(in) :: nrhs
complex(kind=sp), intent(inout) :: ab(ldab,*)
integer(kind=ilp), intent(in) :: ldab
integer(kind=ilp), intent(out) :: ipiv(*)
complex(kind=sp), intent(inout) :: b(ldb,*)
integer(kind=ilp), intent(in) :: ldb
integer(kind=ilp), intent(out) :: info

public pure subroutine dgbsv(n, kl, ku, nrhs, ab, ldab, ipiv, b, ldb, info)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: kl
integer(kind=ilp), intent(in) :: ku
integer(kind=ilp), intent(in) :: nrhs
real(kind=dp), intent(inout) :: ab(ldab,*)
integer(kind=ilp), intent(in) :: ldab
integer(kind=ilp), intent(out) :: ipiv(*)
real(kind=dp), intent(inout) :: b(ldb,*)
integer(kind=ilp), intent(in) :: ldb
integer(kind=ilp), intent(out) :: info

public pure subroutine sgbsv(n, kl, ku, nrhs, ab, ldab, ipiv, b, ldb, info)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: kl
integer(kind=ilp), intent(in) :: ku
integer(kind=ilp), intent(in) :: nrhs
real(kind=sp), intent(inout) :: ab(ldab,*)
integer(kind=ilp), intent(in) :: ldab
integer(kind=ilp), intent(out) :: ipiv(*)
real(kind=sp), intent(inout) :: b(ldb,*)
integer(kind=ilp), intent(in) :: ldb
integer(kind=ilp), intent(out) :: info

public pure subroutine zgbsv(n, kl, ku, nrhs, ab, ldab, ipiv, b, ldb, info)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: kl
integer(kind=ilp), intent(in) :: ku
integer(kind=ilp), intent(in) :: nrhs
complex(kind=dp), intent(inout) :: ab(ldab,*)
integer(kind=ilp), intent(in) :: ldab
integer(kind=ilp), intent(out) :: ipiv(*)
complex(kind=dp), intent(inout) :: b(ldb,*)
integer(kind=ilp), intent(in) :: ldb
integer(kind=ilp), intent(out) :: info

Module Procedures

public interface stdlib_cgbsv()

Arguments

None

public interface stdlib_dgbsv()

Arguments

None

public interface stdlib_sgbsv()

Arguments

None

public interface stdlib_zgbsv()

Arguments

None