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77 lines
1.8 KiB
77 lines
1.8 KiB
2 years ago
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C Copyright(C) 1999-2020 National Technology & Engineering Solutions
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C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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C NTESS, the U.S. Government retains certain rights in this software.
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C
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C See packages/seacas/LICENSE for details
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C=======================================================================
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INTEGER FUNCTION MEMALL(LENGTH,MEMRY)
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INTEGER LENGTH
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INTEGER MEMRY(*)
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INTEGER LR
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INTEGER LMX
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INTEGER IP
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INTEGER IPN
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INTEGER LAV
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INTEGER LT
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INTEGER IB
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IF (LENGTH.LE.0) THEN
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WRITE (6,*) ' Cannot allocate a segment of length zero.'
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END IF
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LR = LENGTH + MOD(LENGTH,2)
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LMX = MEMRY(1)
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IB = 0
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IP = 3
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2650 IF (.NOT. (IB.EQ.0)) GO TO 2660
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IPN = MEMRY(IP)
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IF (IPN.LE.0) THEN
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LT = IP + LR + 1
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IF (LT.GE.LMX) THEN
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WRITE (6,*) ' Cannot allocate space in memall.'
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WRITE (6,*) ' lt >= lmx '
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WRITE (6,*) ' lt,lr,lmx,length: ',LT,LR,LMX,LENGTH
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MEMALL = (-1)
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RETURN
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END IF
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IF (IPN.EQ.0) THEN
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LAV = LMX - IP - 1
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ELSE IF (IPN.LT.0) THEN
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LAV = -IPN - IP - 2
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END IF
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IF (LAV.GT.LR) THEN
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MEMRY(IP) = LT + 1
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MEMRY(LT+1) = IPN
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IF (IPN.EQ.0) THEN
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MEMRY(2) = LT + 1
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END IF
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IB = IP + 2
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DO 2670 J = 1,LR
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MEMRY(IP+1+J) = 0
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2670 CONTINUE
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ELSE IF (LAV.EQ.LR) THEN
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MEMRY(IP) = -IPN
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IB = IP + 2
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DO 2690 J = 1,LR
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MEMRY(IP+1+J) = 0
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2690 CONTINUE
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END IF
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END IF
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IP = ABS(IPN)
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GO TO 2650
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2660 CONTINUE
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MEMALL = (IB)
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RETURN
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END
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