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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
C--------------------------------------------------------------------------
subroutine fthpdn(ounit,nbytes,status)
C shift the binary table heap down by nbyte bytes
C ounit i fortran output unit number
C nbytes i number of bytes by which to move the heap
C status i returned error status (0=ok)
integer ounit,nbytes,status
C COMMON BLOCK DEFINITIONS:--------------------------------------------
integer nf,nb,ne
parameter (nb = 20)
parameter (nf = 3000)
parameter (ne = 200)
integer bufnum,chdu,hdutyp,maxhdu,hdstrt,hdend,nxthdr,dtstrt
integer nxtfld
logical wrmode
common/ft0001/bufnum(199),chdu(nb),hdutyp(nb),maxhdu(nb),
& wrmode(nb),hdstrt(nb,ne),hdend(nb),nxthdr(nb),dtstrt(nb),nxtfld
integer tfield,tstart,tbcol,rowlen,tdtype,trept,tnull,scount
integer theap,nxheap
double precision tscale,tzero
common/ft0002/tfield(nb),tstart(nb),tbcol(nf),rowlen(nb),
& tdtype(nf),trept(nf),tscale(nf),tzero(nf),tnull(nf),scount(nb)
& ,theap(nb),nxheap(nb)
character*1 buff(5760)
common/ftheap/buff
C END OF COMMON BLOCK DEFINITIONS-----------------------------------
integer i,ibuff,ntodo,jpoint,nchar,tstat
if (status .gt. 0)return
C get the number of the data buffer used for this unit
ibuff=bufnum(ounit)
if (scount(ibuff) .gt. 0)then
ntodo=scount(ibuff)
C set pointer to the end of the heap
jpoint=dtstrt(ibuff)+theap(ibuff)+scount(ibuff)
10 nchar=min(ntodo,5760)
jpoint=jpoint-nchar
C move to the read start position
call ftmbyt(ounit,jpoint,.false.,status)
C read the heap
call ftgcbf(ounit,0,nchar,buff,status)
C move forward to the write start postion
call ftmbyt(ounit,jpoint+nbytes,.true.,status)
C write the heap
call ftpcbf(ounit,0,nchar,buff,status)
C check for error
if (status .gt. 0)then
call ftpmsg('Error while moving heap down (FTDNHP)')
return
end if
C check for more data in the heap
ntodo=ntodo-nchar
if (ntodo .gt. 0)go to 10
C now overwrite the old fill data with zeros
do 20 i=1,5760
buff(i)=char(0)
20 continue
jpoint=dtstrt(ibuff)+theap(ibuff)
call ftmbyt(ounit,jpoint,.false.,status)
ntodo=nbytes
30 nchar=min(ntodo,5760)
call ftpcbf(ounit,0,nchar,buff,status)
ntodo=ntodo-nchar
if (ntodo .gt. 0)go to 30
end if
C update the heap starting address
theap(ibuff)=theap(ibuff)+nbytes
C try updating the keyword value, if it exists
tstat=status
call ftmkyj(ounit,'THEAP',theap(ibuff),'&',status)
if (status .eq. 202)status=tstat
end
|
