/[lmdze]/trunk/Sources/dyn3d/invert_zoom_x.f
ViewVC logotype

Diff of /trunk/Sources/dyn3d/invert_zoom_x.f

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 149 by guez, Thu Jun 18 12:23:44 2015 UTC revision 154 by guez, Tue Jul 7 17:49:23 2015 UTC
# Line 28  contains Line 28  contains
28    
29      ! Local:      ! Local:
30      DOUBLE PRECISION Y      DOUBLE PRECISION Y
31        DOUBLE PRECISION h ! step of the uniform grid
32      integer i, it      integer i, it
33    
34      real xvrai(iim), Gvrai(iim)      DOUBLE PRECISION xvrai(iim), Gvrai(iim)
35      ! intermediary variables because xlon and xprim are simple precision      ! intermediary variables because xlon and xprim are simple precision
36    
37      !------------------------------------------------------------------      !------------------------------------------------------------------
38    
39      it = 0 ! initial guess      it = 0 ! initial guess
40        h = twopi_d / iim
41    
42      DO i = 1, iim      DO i = 1, iim
43         Y = - pi_d + (i + xuv - 0.75d0) * twopi_d / iim         Y = - pi_d + (i + xuv - 0.75d0) * h
44         ! - pi <= y < pi         ! - pi <= y < pi
45         abs_y = abs(y)         abs_y = abs(y)
46    
# Line 48  contains Line 50  contains
50         ! Calcul de xvrai(i) et Gvrai(i)         ! Calcul de xvrai(i) et Gvrai(i)
51         CALL coefpoly(Xf(it), Xf(it + 1), G(it), G(it + 1), xtild(it), &         CALL coefpoly(Xf(it), Xf(it + 1), G(it), G(it + 1), xtild(it), &
52              xtild(it + 1))              xtild(it + 1))
53         xvrai(i) = rtsafe(funcd, real(xtild(it)), real(xtild(it + 1)), &         xvrai(i) = rtsafe(funcd, xtild(it), xtild(it + 1), xacc = 1d-6)
             xacc = 1e-6)  
54         Gvrai(i) = a1 + xvrai(i) * (2d0 * a2 + xvrai(i) * 3d0 * a3)         Gvrai(i) = a1 + xvrai(i) * (2d0 * a2 + xvrai(i) * 3d0 * a3)
55         if (y < 0d0) xvrai(i) = - xvrai(i)         if (y < 0d0) xvrai(i) = - xvrai(i)
56      end DO      end DO
# Line 62  contains Line 63  contains
63      END DO      END DO
64    
65      xlon = xvrai + clon      xlon = xvrai + clon
66      xprim = twopi_d / (iim * Gvrai)      xprim = h / Gvrai
67    
68    end subroutine invert_zoom_x    end subroutine invert_zoom_x
69    
# Line 72  contains Line 73  contains
73    
74      use coefpoly_m, only: a0, a1, a2, a3      use coefpoly_m, only: a0, a1, a2, a3
75    
76      REAL, INTENT(IN):: x      DOUBLE PRECISION, INTENT(IN):: x
77      REAL, INTENT(OUT):: fval, fderiv      DOUBLE PRECISION, INTENT(OUT):: fval, fderiv
78    
79      fval = a0 + x * (a1 + x * (a2 + x * a3)) - abs_y      fval = a0 + x * (a1 + x * (a2 + x * a3)) - abs_y
80      fderiv = a1 + x * (2. * a2 + x * 3. * a3)      fderiv = a1 + x * (2d0 * a2 + x * 3d0 * a3)
81    
82    END SUBROUTINE funcd    END SUBROUTINE funcd
83    
Legend:
Removed from v.149  
changed lines
  Added in v.154
  ViewVC Help
Powered by ViewVC 1.1.21