source:
trunk/libf/filtrez/eigen_sort.F
@
1
| Last change on this file since 1 was 1, checked in by , 14 years ago | |
|---|---|
| File size: 538 bytes | |
| Rev | Line | |
|---|---|---|
| [1] | 1 | ! |
| 2 | ! $Header$ | |
| 3 | ! | |
| 4 | SUBROUTINE eigen_sort(d,v,n,np) | |
| 5 | INTEGER n,np | |
| 6 | REAL d(np),v(np,np) | |
| 7 | INTEGER i,j,k | |
| 8 | REAL p | |
| 9 | ||
| 10 | DO i=1,n-1 | |
| 11 | k=i | |
| 12 | p=d(i) | |
| 13 | DO j=i+1,n | |
| 14 | IF(d(j).ge.p) THEN | |
| 15 | k=j | |
| 16 | p=d(j) | |
| 17 | ENDIF | |
| 18 | ENDDO | |
| 19 | ||
| 20 | IF(k.ne.i) THEN | |
| 21 | d(k)=d(i) | |
| 22 | d(i)=p | |
| 23 | DO j=1,n | |
| 24 | p=v(j,i) | |
| 25 | v(j,i)=v(j,k) | |
| 26 | v(j,k)=p | |
| 27 | ENDDO | |
| 28 | ENDIF | |
| 29 | ENDDO | |
| 30 | ||
| 31 | RETURN | |
| 32 | END |
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