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ASSEMBLY & COMPILE TOOLS/PLM VAX COMPILER/plmvax/nodes.for
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192
ASSEMBLY & COMPILE TOOLS/PLM VAX COMPILER/plmvax/nodes.for
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C***********************************************************************
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C
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C NODES.FOR
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C
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C
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C D I S C L A I M E R N O T I C E
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C ------------------- -----------
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C
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C This document and/or portions of the material and data furnished
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C herewith, was developed under sponsorship of the U. S. Government.
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C Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
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C University, nor their employees, nor their respective contractors,
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C subcontractors, or their employees, makes any warranty, express or
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C implied, or assumes any liability or responsibility for accuracy,
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C completeness or usefulness of any information, apparatus, product
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C or process disclosed, or represents that its use will not infringe
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C privately-owned rights. Mention of any product, its manufacturer,
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C or suppliers shall not, nor is it intended to, imply approval, dis-
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C approval, or fitness for any particular use. The U. S. and the
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C University at all times retain the right to use and disseminate same
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C for any purpose whatsoever. Such distribution shall be made by the
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C National Energy Software Center at the Argonne National Laboratory
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C and only subject to the distributee furnishing satisfactory proof
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C that he has a valid license from the Intel Corporation in effect.
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C
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C
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C-----------------------------------------------------------------------
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C
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C This module of the PL/M-VAX compiler contains routines to create
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C nodes of a code tree, and to determine the type of a node.
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C
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C-----------------------------------------------------------------------
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C R E V I S I O N H I S T O R Y
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C
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C 20OCT81 Alex Hunter 1. Added disclaimer notice. (V5.4)
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C 21OCT81 Alex Hunter 1. Basic block analysis. (V5.5)
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C 10NOV81 Alex Hunter 1. Add serial no. deltas. (6.0)
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C
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C-----------------------------------------------------------------------
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INTEGER*2 FUNCTION MAKE_NODE(OP,OPND1,OPND2,TYPE,REG,REFCT)
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INCLUDE 'PLMCOM.FOR/NOLIST'
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REAL*8 RVAL
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INTEGER*4 IVAL,IVAL1
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IF (NEXT_NODE.GT.NODE_MAX) CALL FATAL('NODE TABLE OVERFLOW')
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OPNODE_OP(NEXT_NODE)=OP
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OPNODE_OPND1(NEXT_NODE)=OPND1
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OPNODE_OPND2(NEXT_NODE)=OPND2
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NODE_TYPE(NEXT_NODE)=TYPE
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NODE_REG(NEXT_NODE)=REG
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NODE_REFCT(NEXT_NODE)=0
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NODE_CONTEXT(NEXT_NODE)=0
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MAKE_NODE=NEXT_NODE
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NEXT_NODE=NEXT_NODE+1
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RETURN
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C---------------------------------------
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ENTRY MAKE_ATOM(SYM,MEM,BASE,SUBSCRIPT,TYPE,REG,REFCT)
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C---------------------------------------
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IF (NEXT_ATOM.GT.ATOM_MAX) CALL FATAL('ATOM TABLE OVERFLOW')
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ATOM_SYM(NEXT_ATOM)=SYM
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ATOM_MEM(NEXT_ATOM)=MEM
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ATOM_BASE(NEXT_ATOM)=BASE
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ATOM_SUB(NEXT_ATOM)=SUBSCRIPT
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ATOM_DISP(NEXT_ATOM)=0
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ATOM_FLAGS(NEXT_ATOM)=0
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NODE_TYPE(NEXT_ATOM)=TYPE
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NODE_REG(NEXT_ATOM)=REG
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NODE_REFCT(NEXT_ATOM)=0
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NODE_CONTEXT(NEXT_ATOM)=CONTEXT(TYPE)
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IF (MEM.NE.0) THEN
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ATOM_SERIAL_NO(NEXT_ATOM)=MEMBER_SERIAL_NO(MEM)
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ELSEIF (SYM.NE.0) THEN
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ATOM_SERIAL_NO(NEXT_ATOM)=SYMBOL_SERIAL_NO(SYM)
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ELSE
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ATOM_SERIAL_NO(NEXT_ATOM)=-1
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ENDIF
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IF (SYM.NE.0.AND.SYMBOL_REF(SYM).EQ.S_EXT) THEN
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ATOM_SERIAL_NO(NEXT_ATOM) =
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# ATOM_SERIAL_NO(NEXT_ATOM) + EXTERNAL_SERIAL_DELTA
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ENDIF
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IF (BASE.NE.NULL) THEN
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ATOM_SERIAL_NO(NEXT_ATOM) =
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# ATOM_SERIAL_NO(NEXT_ATOM) + BASED_SERIAL_DELTA
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ENDIF
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IF (SUBSCRIPT.NE.NULL) THEN
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ATOM_SERIAL_NO(NEXT_ATOM) =
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# ATOM_SERIAL_NO(NEXT_ATOM) + SUBSCRIPTED_SERIAL_DELTA
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ENDIF
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IF ((SYMBOL_FLAGS(SYM).AND.S_OVERLAID).NE.0) THEN
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ATOM_SERIAL_NO(NEXT_ATOM) =
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# ATOM_SERIAL_NO(NEXT_ATOM) + OVERLAID_SERIAL_DELTA
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ENDIF
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MAKE_ATOM=NEXT_ATOM
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NEXT_ATOM=NEXT_ATOM+1
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RETURN
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C---------------------------------------
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ENTRY MAKE_FIXED(IVAL,TYPE)
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C---------------------------------------
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IVAL1=IVAL
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GO TO 10
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C---------------------------------------
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ENTRY MAKE_FIXED2(I2VAL,TYPE)
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C---------------------------------------
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IVAL1=I2VAL
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10 IF (NEXT_FIXED.GT.FIX_MAX)
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# CALL FATAL('FIXED POINT LITERAL TABLE OVERFLOW')
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FIXED_VAL(NEXT_FIXED)=IVAL1
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NODE_TYPE(NEXT_FIXED)=TYPE
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NODE_REG(NEXT_FIXED)=0
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NODE_REFCT(NEXT_FIXED)=0
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IF (TYPE.EQ.0) THEN
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NODE_CONTEXT(NEXT_FIXED)=0
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ELSEIF (TYPE.EQ.S_INTEGER) THEN
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NODE_CONTEXT(NEXT_FIXED)=CX_SIGNED
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ELSE
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NODE_CONTEXT(NEXT_FIXED)=CX_UNSIGNED
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ENDIF
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MAKE_FIXED=NEXT_FIXED
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NEXT_FIXED=NEXT_FIXED+1
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RETURN
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C---------------------------------------
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ENTRY MAKE_FLOAT(RVAL,TYPE)
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C---------------------------------------
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IF (NEXT_FLOAT.GT.FLT_MAX)
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# CALL FATAL('FLOATING POINT LITERAL TABLE OVERFLOW')
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FLOAT_VAL(NEXT_FLOAT)=RVAL
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NODE_TYPE(NEXT_FLOAT)=TYPE
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NODE_REG(NEXT_FLOAT)=0
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NODE_REFCT(NEXT_FLOAT)=0
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NODE_CONTEXT(NEXT_FLOAT)=CX_SIGNED
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MAKE_FLOAT=NEXT_FLOAT
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NEXT_FLOAT=NEXT_FLOAT+1
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RETURN
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C---------------------------------------
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ENTRY MAKE_CONSTANT(LL,TYPE)
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C---------------------------------------
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IF (NEXT_CONSTANT.GT.CON_MAX)
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# CALL FATAL('CONSTANT TABLE OVERFLOW')
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CONSTANT_LABEL(NEXT_CONSTANT)=LL
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NODE_TYPE(NEXT_CONSTANT)=TYPE
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NODE_REG(NEXT_CONSTANT)=0
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NODE_REFCT(NEXT_CONSTANT)=0
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NODE_CONTEXT(NEXT_CONSTANT)=CONTEXT(TYPE)
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MAKE_CONSTANT=NEXT_CONSTANT
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NEXT_CONSTANT=NEXT_CONSTANT+1
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RETURN
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C---------------------------------------
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ENTRY MAKE_REGISTER(REG,TYPE)
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C---------------------------------------
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NODE_TYPE(REG)=TYPE
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NODE_REG(REG)=REG
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NODE_REFCT(REG)=0
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NODE_CONTEXT(REG)=CONTEXT(TYPE)
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MAKE_REGISTER=REG
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RETURN
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END
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C--------------------------------------------------------------
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FUNCTION NODE(LINK)
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INCLUDE 'PLMCOM.FOR/NOLIST'
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NODE=LINK.GE.NODE_MIN.AND.LINK.LE.NODE_MAX
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RETURN
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C---------------------------------------
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ENTRY ATOM(LINK)
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C---------------------------------------
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ATOM=LINK.GE.ATOM_MIN.AND.LINK.LE.ATOM_MAX
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RETURN
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C---------------------------------------
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ENTRY LITERAL(LINK)
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C---------------------------------------
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LITERAL=LINK.GE.FIX_MIN.AND.LINK.LE.FIX_MAX.OR.
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# LINK.GE.FLT_MIN.AND.LINK.LE.FLT_MAX
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RETURN
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C---------------------------------------
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ENTRY FIXLIT(LINK)
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C---------------------------------------
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FIXLIT=LINK.GE.FIX_MIN.AND.LINK.LE.FIX_MAX
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RETURN
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C---------------------------------------
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ENTRY FLOATLIT(LINK)
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C---------------------------------------
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FLOATLIT=LINK.GE.FLT_MIN.AND.LINK.LE.FLT_MAX
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RETURN
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C---------------------------------------
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ENTRY CONSTANT(LINK)
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C---------------------------------------
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CONSTANT=LINK.GE.CON_MIN.AND.LINK.LE.CON_MAX
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RETURN
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C---------------------------------------
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ENTRY REGISTER(LINK)
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C---------------------------------------
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REGISTER=LINK.GE.REG_MIN.AND.LINK.LE.REG_MAX
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RETURN
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END
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