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SUBROUTINE MODAC1(CASECC,TOL,TOL1,CASEZZ,CASEYY)
C
C MODAC1 REDUCES THE NUMBER OF ENTRIES ON TOL TO THE TIMES
C SPECIFIED BY THE OFREQ SET IN CASECC
C
C CORE IS OUT AS FOLLOWS ON RETURN
C
C CONTENTS LENGTH TYPE POINTER
C -------- ------ ---- -------
C NEW TIMES NFN R IFN
C KEEP REMOVE NFO I IKR
C
C
C
C
C
C
C
C
C
C
C
C
C
INTEGER SYSBUF,CASECC,TOL,NAME(2),TOL1,FILE,IHD(2),MCB(7),IBUF(6)
INTEGER CASEZZ,CASEYY,FLAG
REAL Z(1)
COMMON /SYSTEM/ SYSBUF
COMMON /MODAC3/ NFO,NFN,NZ, ID
COMMON /ZZZZZZ/ IZ(1)
EQUIVALENCE ( Z(1), IZ(1) )
DATA NAME /4HMODA,4HC1 /
C
C BRING IN CASECC
C
LW = 6
IF(ID .EQ. 4) LW = 7
IBUF1 = NZ -SYSBUF+1
IBUF2 = IBUF1-SYSBUF
IBUF3 = IBUF2 -SYSBUF
CALL GOPEN(CASECC,IZ(IBUF1),0)
FILE = CASECC
CALL READ(*900,*10,CASECC,IZ,IBUF2-1,0,IVEC)
CALL MESAGE(-8,0,NAME)
10 CONTINUE
ICC = 0
CALL CLOSE(CASECC, 1)
IFROUT =145
ILSYM = 200
IVEC = IVEC+1
ILIST = IVEC
IF(ID .EQ. 5) GO TO 600
C
C BRING IN OLD TIME/FREQ LIST
C
FILE = TOL
CALL OPEN(*900,TOL,IZ(IBUF1),0)
I = ILIST
M = 3
IX= 2
NFO = NFO + I
IF(ID .EQ. 2 .OR. ID .EQ. 4) GO TO 25
20 CALL READ(*910,*30,TOL,IBUF,M,0,FLAG)
IZ(I) =IBUF(M)
IZ(I+1)= 0
I = I + IX
M =1
GO TO 20
25 CALL FWDREC(*910,TOL)
CALL FWDREC(*910,TOL)
26 CALL READ(*910,*30,TOL,IBUF,LW,0,FLAG)
IZ(I) = IBUF(4)
C REIG SHOULD BE ON CYCLES
IF(ID .EQ. 4) IZ(I) = IBUF(5)
IZ(I+1) = 0
I = I+2
IF(I.EQ.NFO) GO TO 30
GO TO 26
30 CALL CLOSE(TOL,1)
NLIST = I -IX
C
C MATCH LIST OF SELECTED VALUES WITH TIME LIST IN CORE
C
35 CONTINUE
IX = ICC + IFROUT
IFSET = IZ(IX)
IF ( IFSET .LE. 0) GO TO 70
IX = ICC +ILSYM
ISETNF = IX + IZ(IX)+1
40 ISETF = ISETNF +2
NSETF =IZ(ISETNF+1) + ISETF-1
IF( IZ(ISETNF).EQ. IFSET) GO TO 80
ISETNF = NSETF +1
IF ( ISETNF .LT. IVEC) GO TO 40
IFSET = -1
70 DO 75 J = ILIST,NLIST,2
75 IZ(J+1) = 1
GO TO 200
80 DO 100 I = ISETF,NSETF
K = 0
DIFF = 1.E25
REAL = Z(I)
DO 90 J = ILIST,NLIST,2
IF (IZ(J+1) .NE. 0) GO TO 90
DIFF1 = ABS(Z(J) - REAL)
IF( DIFF1 .GE. DIFF) GO TO 90
DIFF = DIFF1
K = J
90 CONTINUE
IF ( K .NE. 0) IZ(K+1) = 1
100 CONTINUE
C
C SELECTED FREQUENCIES MARKED FOR OUTPUT
C
200 NFO =(NLIST - ILIST +2)/2
C
C MOVE NEW FREQ TO UPPER
C
K=1
DO 300 I= ILIST,NLIST,2
IF( IZ(I+1).EQ. 0) GO TO 300
Z(K) = Z(I)
K = K +1
300 CONTINUE
NFN = K-1
DO 400 I = ILIST,NLIST,2
IZ(K) = IZ(I+1)
K = K+1
400 CONTINUE
IF(ID .EQ. 5) RETURN
FILE =TOL1
CALL OPEN(*800,TOL1,IZ(IBUF1),1)
CALL FNAME(TOL1,IHD)
CALL WRITE(TOL1,IHD,2,0)
IF(ID .EQ. 2 .OR. ID .EQ. 4) GO TO 402
CALL WRITE(TOL1,Z,NFN,1)
401 CONTINUE
CALL CLOSE(TOL1,1)
MCB(1)= TOL1
MCB(2)= NFN
CALL WRTTRL(MCB )
IF(ID .EQ. 2) GO TO 500
800 RETURN
C
C COPY OVER CLAMA STUFF
C
402 CALL WRITE(TOL1,0,0,1)
K = NFN + NFO + 1
NZX = IBUF3 -K
FILE = TOL
CALL GOPEN(TOL,IZ(IBUF2),0)
CALL READ(*910,*920,TOL,IZ(K),146,1,FLAG)
CALL WRITE(TOL1,IZ(K),146,1)
M = NFN+1
N = M+NFO -1
DO 410 I = M,N
CALL READ(*910,*920,TOL,IZ(K),LW,0,FLAG)
IF(IZ(I) .EQ. 0) GO TO 410
CALL WRITE(TOL1,IZ(K),LW,0)
410 CONTINUE
CALL CLOSE(TOL,1)
CALL WRITE(TOL1,0,0,1)
GO TO 401
C
C COPY OVER CASECC
C
500 CALL GOPEN(CASECC,IZ(IBUF1),0)
CALL GOPEN(CASEZZ,IZ(IBUF2),1)
M = NFN +1
N = M+NFO-1
DO 510 I = M,N
CALL READ(*511,*520,CASECC,IZ(K),NZX,0,FLAG)
520 IF(IZ(I) .EQ. 0) GO TO 510
CALL WRITE(CASEZZ,IZ(K),FLAG,1)
510 CONTINUE
511 CALL CLOSE(CASECC,1)
CALL CLOSE(CASEZZ,1)
MCB(1) = CASECC
CALL RDTRL(MCB)
MCB(1) = CASEZZ
CALL WRTTRL(MCB)
RETURN
C
C STATIC ANALYSIS
C
600 CONTINUE
R = 1.0
NFO = NFO+ILIST
NLIST = NFO-2
DO 610 I = ILIST,NFO,2
Z(I) = R
IZ(I+1) = 0
R = R+1.
610 CONTINUE
C
C COPY EDT
C
CALL OPEN(*670,TOL,IZ(IBUF1),0)
CALL OPEN(*670,TOL1,IZ(IBUF2),1)
FILE = TOL
CALL FNAME(TOL1,IHD)
CALL WRITE(TOL1,IHD,2,0)
620 CALL READ(*630,*920,TOL,IZ(NFO+2),NZ,0,FLAG)
CALL WRITE(TOL1,IZ(NFO+2),FLAG,1)
GO TO 620
630 CALL CLOSE(TOL,1)
CALL CLOSE(TOL1,1)
MCB(1) = TOL
CALL RDTRL(MCB)
MCB(1) = TOL1
CALL WRTTRL(MCB)
670 GO TO 35
C
C ERROR MESSAGES
C
900 IP1=-1
901 CALL MESAGE(IP1,FILE,NAME)
910 IP1=-2
GO TO 901
920 IP1=-3
GO TO 901
END
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