DSurfTomo/srcsmooth/lsmrblasInterface.f90
Hongjian Fang fb7b81711f Initial commit
change 1e-2 to 'ftol' in CalSurfG.f90, which may cause problem with small study region (~2 km)
2016-03-29 15:48:02 +02:00

42 lines
1.3 KiB
Fortran

!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! File lsmrblasInterface.f90
!
! BLAS1 Interfaces: ddot dnrm2 dscal
!
! Maintained by Michael Saunders <saunders@stanford.edu>.
!
! 19 Dec 2008: lsqrblasInterface module implemented.
! Metcalf and Reid recommend putting interfaces in a module.
! 16 Jul 2010: LSMR version derived from LSQR equivalent.
!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
module lsmrblasInterface
implicit none
public :: ddot, dnrm2, dscal
interface ! Level 1 BLAS
function ddot (n,dx,incx,dy,incy)
use lsmrDataModule, only : dp
integer, intent(in) :: n,incx,incy
real(dp), intent(in) :: dx(*),dy(*)
real(dp) :: ddot
end function ddot
function dnrm2 (n,dx,incx)
use lsmrDataModule, only : dp
integer, intent(in) :: n,incx
real(dp), intent(in) :: dx(*)
real(dp) :: dnrm2
end function dnrm2
subroutine dscal (n,sa,x,incx)
use lsmrDataModule, only : dp
integer, intent(in) :: n,incx
real(dp), intent(in) :: sa
real(dp), intent(inout) :: x(*)
end subroutine dscal
end interface
end module lsmrblasInterface