DAMASK_EICMD/src/LAPACK_interface.f90

70 lines
2.9 KiB
Fortran

!--------------------------------------------------------------------------------------------------
!> @author Martin Diehl, Max-Planck-Institut für Eisenforschung GmbH
!> @brief Fortran interfaces for LAPACK routines
!> @details https://www.netlib.org/lapack/
!--------------------------------------------------------------------------------------------------
module LAPACK_interface
interface
pure subroutine dgeev(jobvl,jobvr,n,a,lda,wr,wi,vl,ldvl,vr,ldvr,work,lwork,info)
use prec
implicit none(type,external)
character, intent(in) :: jobvl,jobvr
integer, intent(in) :: n,lda,ldvl,ldvr,lwork
real(pReal), intent(inout), dimension(lda,n) :: a
real(pReal), intent(out), dimension(n) :: wr,wi
real(pReal), intent(out), dimension(ldvl,n) :: vl
real(pReal), intent(out), dimension(ldvr,n) :: vr
real(pReal), intent(out), dimension(max(1,lwork)) :: work
integer, intent(out) :: info
end subroutine dgeev
pure subroutine dgesv(n,nrhs,a,lda,ipiv,b,ldb,info)
use prec
implicit none(type,external)
integer, intent(in) :: n,nrhs,lda,ldb
real(pReal), intent(inout), dimension(lda,n) :: a
integer, intent(out), dimension(n) :: ipiv
real(pReal), intent(inout), dimension(ldb,nrhs) :: b
integer, intent(out) :: info
end subroutine dgesv
pure subroutine dgetrf(m,n,a,lda,ipiv,info)
use prec
implicit none(type,external)
integer, intent(in) :: m,n,lda
real(pReal), intent(inout), dimension(lda,n) :: a
integer, intent(out), dimension(min(m,n)) :: ipiv
integer, intent(out) :: info
end subroutine dgetrf
pure subroutine dgetri(n,a,lda,ipiv,work,lwork,info)
use prec
implicit none(type,external)
integer, intent(in) :: n,lda,lwork
real(pReal), intent(inout), dimension(lda,n) :: a
integer, intent(in), dimension(n) :: ipiv
real(pReal), intent(out), dimension(max(1,lwork)) :: work
integer, intent(out) :: info
end subroutine dgetri
pure subroutine dsyev(jobz,uplo,n,a,lda,w,work,lwork,info)
use prec
implicit none(type,external)
character, intent(in) :: jobz,uplo
integer, intent(in) :: n,lda,lwork
real(pReal), intent(inout), dimension(lda,n) :: a
real(pReal), intent(out), dimension(n) :: w
real(pReal), intent(out), dimension(max(1,lwork)) :: work
integer, intent(out) :: info
end subroutine dsyev
end interface
end module LAPACK_interface