|
Last change
on this file since 3469 was
1796,
checked in by bclmd, 7 years ago
|
|
Adding photochemistry to LMDZ Generic
|
-
Property svn:executable set to
*
|
|
File size:
1.1 KB
|
| Rev | Line | |
|---|
| [1796] | 1 | c****************************************************** |
|---|
| 2 | SUBROUTINE intrplf(x,y,xd,yd,nd) |
|---|
| 3 | c interpolation, give y = f(x) with array xd,yd known, size nd |
|---|
| 4 | |
|---|
| 5 | c Version with CONSTANT values outside limits |
|---|
| 6 | c********************************************************** |
|---|
| 7 | |
|---|
| 8 | c Variable declaration |
|---|
| 9 | c -------------------- |
|---|
| 10 | c Arguments : |
|---|
| 11 | real x,y |
|---|
| 12 | real xd(nd),yd(nd) |
|---|
| 13 | integer nd |
|---|
| 14 | c internal |
|---|
| 15 | integer i,j |
|---|
| 16 | real y_undefined |
|---|
| 17 | |
|---|
| 18 | c run |
|---|
| 19 | c --- |
|---|
| 20 | y_undefined=1.e20 |
|---|
| 21 | |
|---|
| 22 | y=0. |
|---|
| 23 | if ((x.le.xd(1)).and.(x.le.xd(nd))) then |
|---|
| 24 | if (xd(1).lt.xd(nd)) y = yd(1) ! yd(1) |
|---|
| 25 | if (xd(1).ge.xd(nd)) y = yd(nd) ! yd(1) |
|---|
| 26 | else if ((x.ge.xd(1)).and.(x.ge.xd(nd))) then |
|---|
| 27 | if (xd(1).lt.xd(nd)) y = yd(nd) ! yd(1) |
|---|
| 28 | if (xd(1).ge.xd(nd)) y = yd(1) ! yd(1) |
|---|
| 29 | c y = yd (nd) |
|---|
| 30 | else |
|---|
| 31 | do i=1,nd-1 |
|---|
| 32 | if ( ( (x.ge.xd(i)).and.(x.lt.xd(i+1)) ) |
|---|
| 33 | & .or. ( (x.le.xd(i)).and.(x.gt.xd(i+1)) ) ) then |
|---|
| 34 | y=yd(i)+(x-xd(i))*(yd(i+1)-yd(i))/(xd(i+1)-xd(i)) |
|---|
| 35 | goto 99 |
|---|
| 36 | end if |
|---|
| 37 | end do |
|---|
| 38 | end if |
|---|
| 39 | |
|---|
| 40 | 99 continue |
|---|
| 41 | return |
|---|
| 42 | end |
|---|
Note: See
TracBrowser
for help on using the repository browser.
