File: l2que.f

package info (click to toggle)
scilab 4.0-12
  • links: PTS
  • area: non-free
  • in suites: etch, etch-m68k
  • size: 100,640 kB
  • ctags: 57,333
  • sloc: ansic: 377,889; fortran: 242,862; xml: 179,819; tcl: 42,062; sh: 10,593; ml: 9,441; makefile: 4,377; cpp: 1,354; java: 621; csh: 260; yacc: 247; perl: 130; lex: 126; asm: 72; lisp: 30
file content (48 lines) | stat: -rw-r--r-- 1,069 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
      subroutine l2que(r,fe,che,head,lngt,n,d,p,q)
      integer r,fe,che,head,lngt,d,p,q,u,v,dv,pntr
      dimension fe(n),d(n),p(n),q(*)
      dimension head(*),lngt(*),che(*)
      inf = 999999999
      do 10 i=1,n
         q(i) = 0
         d(i) = inf
 10   continue
      q(r) = - 1
      d(r)=0
      p(r) = 0
      nn = n + 1
      q(nn) = nn
      last = nn
      pntr = nn
      u = r
 20   continue

      j=fe(u)
 25   if (j.gt.0) then
         v = head(j)
         dv = d(u) + lngt(j)
         if ( d(v) .gt. dv ) then
            d(v) = dv
            p(v) = u
            if ( q(v) ) 30,40,50
 30         q(v) = q(pntr)
            q(pntr) = v
            if ( last .eq. pntr ) last=v
            pntr = v
            go to 50
 40         q(last) = v
            q(v) = nn
            last = v
 50         continue
         end if
         j=che(j)
         goto 25
      end if
 60   u = q(nn)
      q(nn) = q(u)
      q(u) = - 1
      if ( last .eq. u ) last = nn
      if ( pntr .eq. u ) pntr = nn
      if ( u .le. n ) go to 20
      return
      end