source:
LMDZ.3.3/branches/LF/libf/filtrez/eigen_sort.F
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| Last change on this file since 421 was 2, checked in by , 26 years ago | |
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| File size: 523 bytes | |
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| 1 | SUBROUTINE eigen_sort(d,v,n,np) |
| 2 | INTEGER n,np |
| 3 | REAL d(np),v(np,np) |
| 4 | INTEGER i,j,k |
| 5 | REAL p |
| 6 | |
| 7 | DO i=1,n-1 |
| 8 | k=i |
| 9 | p=d(i) |
| 10 | DO j=i+1,n |
| 11 | IF(d(j).ge.p) THEN |
| 12 | k=j |
| 13 | p=d(j) |
| 14 | ENDIF |
| 15 | ENDDO |
| 16 | |
| 17 | IF(k.ne.i) THEN |
| 18 | d(k)=d(i) |
| 19 | d(i)=p |
| 20 | DO j=1,n |
| 21 | p=v(j,i) |
| 22 | v(j,i)=v(j,k) |
| 23 | v(j,k)=p |
| 24 | ENDDO |
| 25 | ENDIF |
| 26 | ENDDO |
| 27 | |
| 28 | RETURN |
| 29 | END |
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