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! $Header$
#include "cctk.h"
module lapack
implicit none
public
! ev: eigenvalues
! ge (general), gg (generalised eigenvalues), sb (symmetric banded),
! sp (symmetric packed), st (symmetric tridiagonal), sy (symmetric)
interface geev
subroutine sgeev (jobvl, jobvr, n, a, lda, wr, wi, vl, ldvl, vr, &
& ldvr, work, lwork, info)
character jobvl, jobvr
integer info, lda, ldvl, ldvr, lwork, n
real a(lda,n), vl(ldvl,n), vr(ldvr,n), &
& wi(n), work(lwork), wr(n)
end subroutine sgeev
subroutine dgeev (jobvl, jobvr, n, a, lda, wr, wi, vl, ldvl, vr, &
& ldvr, work, lwork, info)
character jobvl, jobvr
integer info, lda, ldvl, ldvr, lwork, n
double precision a(lda,n), vl(ldvl,n), vr(ldvr,n), &
& wi(n), work(lwork), wr(n)
end subroutine dgeev
end interface
interface syev
subroutine ssyev (jobz, uplo, n, a, lda, w, work, lwork, info)
character jobz, uplo
integer info, lda, lwork, n
real a(lda,n), w(n), work(lwork)
end subroutine ssyev
subroutine dsyev (jobz, uplo, n, a, lda, w, work, lwork, info)
character jobz, uplo
integer info, lda, lwork, n
double precision a(lda,n), w(n), work(lwork)
end subroutine dsyev
end interface
! sv: solve
! gb (general banded), ge (general), gt (general tridiagonal),
! pb (symmetric positive banded), po (symmetric positive),
! pp (symmetric positive packed), pt (symmetric positive tridiagonal),
! sp (symmetric packed), sy (symmetric)
interface gesv
subroutine sgesv (n, nrhs, a, lda, ipiv, b, ldb, info)
implicit none
integer n
integer nrhs
integer lda
real a(lda,n)
integer ipiv(n)
integer ldb
real b(ldb,nrhs)
integer info
end subroutine sgesv
subroutine dgesv (n, nrhs, a, lda, ipiv, b, ldb, info)
implicit none
integer n
integer nrhs
integer lda
double precision a(lda,n)
integer ipiv(n)
integer ldb
double precision b(ldb,nrhs)
integer info
end subroutine dgesv
end interface
interface posv
subroutine sposv (uplo, n, nrhs, a, lda, b, ldb, info)
implicit none
character uplo
integer n
integer nrhs
integer lda
real a(lda,n)
integer ldb
real b(ldb,nrhs)
integer info
end subroutine sposv
subroutine dposv (uplo, n, nrhs, a, lda, b, ldb, info)
implicit none
character uplo
integer n
integer nrhs
integer lda
double precision a(lda,n)
integer ldb
double precision b(ldb,nrhs)
integer info
end subroutine dposv
end interface
interface sysv
subroutine ssysv (uplo, n, nrhs, a, lda, ipiv, b, ldb, work, lwork, info)
implicit none
character uplo
integer n
integer nrhs
integer lda
real a(lda,n)
integer ipiv(n)
integer ldb
real b(ldb,nrhs)
integer lwork
real work(lwork)
integer info
end subroutine ssysv
subroutine dsysv (uplo, n, nrhs, a, lda, ipiv, b, ldb, work, lwork, info)
implicit none
character uplo
integer n
integer nrhs
integer lda
double precision a(lda,n)
integer ipiv(n)
integer ldb
double precision b(ldb,nrhs)
integer lwork
double precision work(lwork)
integer info
end subroutine dsysv
end interface
! trf: LU factorisation
! gb (general banded), ge (general), gt (general tridiagonal),
! pb (symmetric positive banded), po (symmetric positive),
! pp (symmetric positive packed), pt (symmetric positive tridiagonal),
! sp (symmetric packed), sy (symmetric)
interface sytrf
subroutine ssytrf (m, n, a, lda, ipiv, info)
implicit none
integer m
integer n
integer lda
real a(lda,n)
integer ipiv(n)
integer info
end subroutine ssytrf
subroutine dsytrf (m, n, a, lda, ipiv, info)
implicit none
integer m
integer n
integer lda
double precision a(lda,n)
integer ipiv(n)
integer info
end subroutine dsytrf
end interface
end module lapack
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