unify_abscissas_2d.F

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!||====================================================================
!||    unify_abscissa_2d   ../starter/source/materials/tools/unify_abscissas_2d.F
!||--- called by ------------------------------------------------------
!||    func_table_copy     ../starter/source/materials/tools/func_table_copy.F90
!||    law70_table         ../starter/source/materials/mat/mat070/law70_table.F
!||--- calls      -----------------------------------------------------
!||====================================================================
       SUBROUTINE unify_abscissa_2d(NFUNC,LEN,LMAX,NPT,XI,XF)
C-----------------------------------------------
C   D e s c r i p t i o n
C-----------------------------------------------
      ! create abscissa vector common to all input functions, in ascending order
      ! and calculate new interpolated values of all functions
c-------------------------------------------------------------
      ! XI : INPUT   - initial X coordinates of all functions
      ! XF : OUTPUT  - common abscissa coordinates
      ! NPT : Input  => Sum of all function point numbers
      !       Output => Final length of common abscissa vector
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER ,INTENT(IN)                         :: NFUNC ! number of input functions
      INTEGER ,INTENT(IN)                         :: LMAX  ! max X length in input
      INTEGER ,INTENT(INOUT)                      :: NPT   ! length of X vector
      INTEGER ,DIMENSION(NFUNC)      ,INTENT(IN)  :: LEN   ! NPTS by function
      my_real ,DIMENSION(LMAX,NFUNC) ,INTENT(IN)  :: xi    ! initial abscissa coordinates
      my_real ,DIMENSION(NPT)        ,INTENT(OUT) :: xf    ! output abscissa vector
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER :: I,LTOT,LL,IDX,IERROR
      my_real :: x1,x2,xc,y1,y2,dx,dx1,deri
      my_real ,DIMENSION(:) ,ALLOCATABLE :: xtmp
      INTEGER, DIMENSION(:), ALLOCATABLE :: PERM
c=======================================================================
      ltot = npt
      ALLOCATE (perm(ltot))
      ALLOCATE (xtmp(ltot))
      xf(:)   = zero
      xtmp(:) = zero
      idx = 0
      DO i = 1,nfunc
        ll = len(i)
        xtmp(idx+1:idx+ll) = xi(1:ll,i)
        idx = idx + ll
      END DO
c     
      CALL myqsort(ltot,xtmp,perm,ierror)
c
c     create common abscissa vector XF
c
      npt = 1
      xf(1) = xtmp(1)
      DO i = 2,ltot
        IF (xtmp(i) > xf(npt)) THEN
          npt = npt + 1
          xf(npt) = xtmp(i)
        END IF
      END DO
c
      DEALLOCATE (xtmp)
      DEALLOCATE (perm)
c-----------
      RETURN
      END SUBROUTINE unify_abscissa_2d