version 1.5, 2010/08/07 13:22:09
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version 1.8, 2011/07/22 07:38:01
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* |
* |
* .. Local Scalars .. |
* .. Local Scalars .. |
DOUBLE PRECISION DFLAG,DH11,DH12,DH21,DH22,DP1,DP2,DQ1,DQ2,DTEMP, |
DOUBLE PRECISION DFLAG,DH11,DH12,DH21,DH22,DP1,DP2,DQ1,DQ2,DTEMP, |
+ DU,GAM,GAMSQ,ONE,RGAMSQ,TWO,ZERO |
$ DU,GAM,GAMSQ,ONE,RGAMSQ,TWO,ZERO |
INTEGER IGO |
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* .. |
* .. |
* .. Intrinsic Functions .. |
* .. Intrinsic Functions .. |
INTRINSIC DABS |
INTRINSIC DABS |
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DATA GAM,GAMSQ,RGAMSQ/4096.D0,16777216.D0,5.9604645D-8/ |
DATA GAM,GAMSQ,RGAMSQ/4096.D0,16777216.D0,5.9604645D-8/ |
* .. |
* .. |
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IF (.NOT.DD1.LT.ZERO) GO TO 10 |
IF (DD1.LT.ZERO) THEN |
* GO ZERO-H-D-AND-DX1.. |
* GO ZERO-H-D-AND-DX1.. |
GO TO 60 |
DFLAG = -ONE |
10 CONTINUE |
DH11 = ZERO |
* CASE-DD1-NONNEGATIVE |
DH12 = ZERO |
DP2 = DD2*DY1 |
DH21 = ZERO |
IF (.NOT.DP2.EQ.ZERO) GO TO 20 |
DH22 = ZERO |
DFLAG = -TWO |
* |
GO TO 260 |
DD1 = ZERO |
20 CONTINUE |
DD2 = ZERO |
* REGULAR-CASE.. |
DX1 = ZERO |
DP1 = DD1*DX1 |
ELSE |
DQ2 = DP2*DY1 |
* CASE-DD1-NONNEGATIVE |
DQ1 = DP1*DX1 |
DP2 = DD2*DY1 |
* |
IF (DP2.EQ.ZERO) THEN |
IF (.NOT.DABS(DQ1).GT.DABS(DQ2)) GO TO 40 |
DFLAG = -TWO |
DH21 = -DY1/DX1 |
DPARAM(1) = DFLAG |
DH12 = DP2/DP1 |
RETURN |
* |
END IF |
DU = ONE - DH12*DH21 |
* REGULAR-CASE.. |
* |
DP1 = DD1*DX1 |
IF (.NOT.DU.LE.ZERO) GO TO 30 |
DQ2 = DP2*DY1 |
* GO ZERO-H-D-AND-DX1.. |
DQ1 = DP1*DX1 |
GO TO 60 |
* |
30 CONTINUE |
IF (DABS(DQ1).GT.DABS(DQ2)) THEN |
DFLAG = ZERO |
DH21 = -DY1/DX1 |
DD1 = DD1/DU |
DH12 = DP2/DP1 |
DD2 = DD2/DU |
* |
DX1 = DX1*DU |
DU = ONE - DH12*DH21 |
* GO SCALE-CHECK.. |
* |
GO TO 100 |
IF (DU.GT.ZERO) THEN |
40 CONTINUE |
DFLAG = ZERO |
IF (.NOT.DQ2.LT.ZERO) GO TO 50 |
DD1 = DD1/DU |
* GO ZERO-H-D-AND-DX1.. |
DD2 = DD2/DU |
GO TO 60 |
DX1 = DX1*DU |
50 CONTINUE |
END IF |
DFLAG = ONE |
ELSE |
DH11 = DP1/DP2 |
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DH22 = DX1/DY1 |
IF (DQ2.LT.ZERO) THEN |
DU = ONE + DH11*DH22 |
* GO ZERO-H-D-AND-DX1.. |
DTEMP = DD2/DU |
DFLAG = -ONE |
DD2 = DD1/DU |
DH11 = ZERO |
DD1 = DTEMP |
DH12 = ZERO |
DX1 = DY1*DU |
DH21 = ZERO |
* GO SCALE-CHECK |
DH22 = ZERO |
GO TO 100 |
* |
60 CONTINUE |
DD1 = ZERO |
* PROCEDURE..ZERO-H-D-AND-DX1.. |
DD2 = ZERO |
DFLAG = -ONE |
DX1 = ZERO |
DH11 = ZERO |
ELSE |
DH12 = ZERO |
DFLAG = ONE |
DH21 = ZERO |
DH11 = DP1/DP2 |
DH22 = ZERO |
DH22 = DX1/DY1 |
* |
DU = ONE + DH11*DH22 |
DD1 = ZERO |
DTEMP = DD2/DU |
DD2 = ZERO |
DD2 = DD1/DU |
DX1 = ZERO |
DD1 = DTEMP |
* RETURN.. |
DX1 = DY1*DU |
GO TO 220 |
END IF |
70 CONTINUE |
END IF |
* PROCEDURE..FIX-H.. |
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IF (.NOT.DFLAG.GE.ZERO) GO TO 90 |
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* |
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IF (.NOT.DFLAG.EQ.ZERO) GO TO 80 |
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DH11 = ONE |
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DH22 = ONE |
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DFLAG = -ONE |
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GO TO 90 |
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80 CONTINUE |
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DH21 = -ONE |
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DH12 = ONE |
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DFLAG = -ONE |
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90 CONTINUE |
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GO TO (150,180,210) IGO |
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GO TO 120 |
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100 CONTINUE |
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* PROCEDURE..SCALE-CHECK |
* PROCEDURE..SCALE-CHECK |
110 CONTINUE |
IF (DD1.NE.ZERO) THEN |
IF (.NOT.DD1.LE.RGAMSQ) GO TO 130 |
DO WHILE ((DD1.LE.RGAMSQ) .OR. (DD1.GE.GAMSQ)) |
IF (DD1.EQ.ZERO) GO TO 160 |
IF (DFLAG.EQ.ZERO) THEN |
IGO = 0 |
DH11 = ONE |
* FIX-H.. |
DH22 = ONE |
GO TO 70 |
DFLAG = -ONE |
120 CONTINUE |
ELSE |
DD1 = DD1*GAM**2 |
DH21 = -ONE |
DX1 = DX1/GAM |
DH12 = ONE |
DH11 = DH11/GAM |
DFLAG = -ONE |
DH12 = DH12/GAM |
END IF |
GO TO 110 |
IF (DD1.LE.RGAMSQ) THEN |
130 CONTINUE |
DD1 = DD1*GAM**2 |
140 CONTINUE |
DX1 = DX1/GAM |
IF (.NOT.DD1.GE.GAMSQ) GO TO 160 |
DH11 = DH11/GAM |
IGO = 1 |
DH12 = DH12/GAM |
* FIX-H.. |
ELSE |
GO TO 70 |
DD1 = DD1/GAM**2 |
150 CONTINUE |
DX1 = DX1*GAM |
DD1 = DD1/GAM**2 |
DH11 = DH11*GAM |
DX1 = DX1*GAM |
DH12 = DH12*GAM |
DH11 = DH11*GAM |
END IF |
DH12 = DH12*GAM |
ENDDO |
GO TO 140 |
END IF |
160 CONTINUE |
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170 CONTINUE |
IF (DD2.NE.ZERO) THEN |
IF (.NOT.DABS(DD2).LE.RGAMSQ) GO TO 190 |
DO WHILE ( (DABS(DD2).LE.RGAMSQ) .OR. (DABS(DD2).GE.GAMSQ) ) |
IF (DD2.EQ.ZERO) GO TO 220 |
IF (DFLAG.EQ.ZERO) THEN |
IGO = 2 |
DH11 = ONE |
* FIX-H.. |
DH22 = ONE |
GO TO 70 |
DFLAG = -ONE |
180 CONTINUE |
ELSE |
DD2 = DD2*GAM**2 |
DH21 = -ONE |
DH21 = DH21/GAM |
DH12 = ONE |
DH22 = DH22/GAM |
DFLAG = -ONE |
GO TO 170 |
END IF |
190 CONTINUE |
IF (DABS(DD2).LE.RGAMSQ) THEN |
200 CONTINUE |
DD2 = DD2*GAM**2 |
IF (.NOT.DABS(DD2).GE.GAMSQ) GO TO 220 |
DH21 = DH21/GAM |
IGO = 3 |
DH22 = DH22/GAM |
* FIX-H.. |
ELSE |
GO TO 70 |
DD2 = DD2/GAM**2 |
210 CONTINUE |
DH21 = DH21*GAM |
DD2 = DD2/GAM**2 |
DH22 = DH22*GAM |
DH21 = DH21*GAM |
END IF |
DH22 = DH22*GAM |
END DO |
GO TO 200 |
END IF |
220 CONTINUE |
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END IF |
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IF (DFLAG.LT.ZERO) THEN |
IF (DFLAG.LT.ZERO) THEN |
GO TO 250 |
DPARAM(2) = DH11 |
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DPARAM(3) = DH21 |
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DPARAM(4) = DH12 |
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DPARAM(5) = DH22 |
ELSE IF (DFLAG.EQ.ZERO) THEN |
ELSE IF (DFLAG.EQ.ZERO) THEN |
GO TO 230 |
DPARAM(3) = DH21 |
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DPARAM(4) = DH12 |
ELSE |
ELSE |
GO TO 240 |
DPARAM(2) = DH11 |
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DPARAM(5) = DH22 |
END IF |
END IF |
230 CONTINUE |
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DPARAM(3) = DH21 |
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DPARAM(4) = DH12 |
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GO TO 260 |
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240 CONTINUE |
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DPARAM(2) = DH11 |
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DPARAM(5) = DH22 |
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GO TO 260 |
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250 CONTINUE |
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DPARAM(2) = DH11 |
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DPARAM(3) = DH21 |
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DPARAM(4) = DH12 |
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DPARAM(5) = DH22 |
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260 CONTINUE |
260 CONTINUE |
DPARAM(1) = DFLAG |
DPARAM(1) = DFLAG |
RETURN |
RETURN |
END |
END |
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