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219 lines
7.7 KiB
Fortran
219 lines
7.7 KiB
Fortran
C***********************************************************************
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C
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C BUILTINS.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 handles those built-in
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C functions which potentially generate in-line code.
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C
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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 29SEP81 Alex Hunter 1. Implement the FIRST function. (V5.3)
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C 2. Allow LENGTH,FIRST,LAST,SIZE to be >64K.
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C 3. Choose correct value of SP for STACK$PTR.
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C 21OCT81 Alex Hunter 1. Implement %_signed and %_unsigned. (V5.5)
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C 10NOV81 Alex Hunter 1. Determine procedure side effects. (V6.0)
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C 12NOV81 Alex Hunter 1. Implement LAST(MEMORY), et al. (V6.1)
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C
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C***********************************************************************
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INTEGER*2 FUNCTION BUILTIN_FUNCTION(DPIX)
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INCLUDE 'PLMCOM.FOR/NOLIST'
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INTEGER*4 LENGTH,SIZE,LOWER_BOUND
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COMMON /BUILTINS/ SYM_SUBS,MEM_SUBS
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PIX=DPIX
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IF (SYMBOL_PLM_ID(PIX).EQ.'LENGTH'.OR.
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# SYMBOL_PLM_ID(PIX).EQ.'FIRST'.OR.
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# SYMBOL_PLM_ID(PIX).EQ.'LAST') THEN
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CALL MATCH(D_LP)
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IF (TT.EQ.FIXCON.OR.TT.EQ.FLOATCON.OR.TT.EQ.STRCON) THEN
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LENGTH=1
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LOWER_BOUND=0
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CALL GETTOK
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ELSE
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CALL MUSTBE(ID)
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CALL LOOKUP_SYMBOL
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CALL PUSH(PIX,1)
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ARG=DATA_REFERENCE(0,.TRUE.)
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CALL POP(PIX,1)
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IF ((SYMBOL_FLAGS(SYMBOL_INDEX).AND.S_SPECIAL).NE.0.AND.
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# SYMBOL_PLM_ID(PIX).NE.'FIRST') THEN
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IF (SYMBOL_PLM_ID(SYMBOL_INDEX).EQ.'MEMORY') THEN
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IF (SYMBOL_PLM_ID(PIX).EQ.'LENGTH') THEN
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SYM=SYM_MLEN
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ELSE
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SYM=SYM_MLAST
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ENDIF
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ELSE
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IF (SYMBOL_PLM_ID(PIX).EQ.'LENGTH') THEN
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SYM=SYM_SLEN
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ELSE
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SYM=SYM_SLAST
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ENDIF
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ENDIF
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BUILTIN_FUNCTION=MAKE_ATOM(SYM,0,NULL,NULL,S_LONG,0,0)
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GO TO 10
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ELSEIF (MEMBER_INDEX.EQ.0) THEN
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IF (SYM_SUBS.EQ.NULL) THEN
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LENGTH=SYMBOL_NBR_ELEMENTS(SYMBOL_INDEX)
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LOWER_BOUND=SYMBOL_LOWER_BOUND(SYMBOL_INDEX)
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ELSE
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LENGTH=1
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LOWER_BOUND=0
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ENDIF
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ELSE
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IF (MEM_SUBS.EQ.NULL) THEN
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LENGTH=MEMBER_NBR_ELEMENTS(MEMBER_INDEX)
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LOWER_BOUND=MEMBER_LOWER_BOUND(MEMBER_INDEX)
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ELSE
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LENGTH=1
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LOWER_BOUND=0
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ENDIF
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ENDIF
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ENDIF
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IF (SYMBOL_PLM_ID(PIX).EQ.'LENGTH') THEN
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BUILTIN_FUNCTION=MAKE_FIXED(LENGTH,S_LONG)
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ELSEIF (SYMBOL_PLM_ID(PIX).EQ.'FIRST') THEN
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BUILTIN_FUNCTION=MAKE_FIXED(LOWER_BOUND,S_LONG)
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ELSE
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BUILTIN_FUNCTION=MAKE_FIXED(LOWER_BOUND+LENGTH-1,S_LONG)
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ENDIF
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10 CALL MATCH(D_RP)
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ELSEIF (SYMBOL_PLM_ID(PIX).EQ.'SIZE') THEN
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CALL MATCH(D_LP)
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IF (TT.EQ.FIXCON) THEN
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IF (FIXVAL.LE.255) THEN
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SIZE=1
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ELSEIF (FIXVAL.LE.'FFFF'X) THEN
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SIZE=2
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ELSE
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SIZE=4
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ENDIF
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CALL GETTOK
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ELSEIF (TT.EQ.FLOATCON) THEN
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SIZE=4
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CALL GETTOK
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ELSEIF (TT.EQ.STRCON) THEN
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SIZE=STRLEN
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CALL GETTOK
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ELSE
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CALL MUSTBE(ID)
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CALL LOOKUP_SYMBOL
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CALL PUSH(PIX,1)
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ARG=DATA_REFERENCE(0,.TRUE.)
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CALL POP(PIX,1)
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IF ((SYMBOL_FLAGS(SYMBOL_INDEX).AND.S_SPECIAL).NE.0) THEN
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IF (SYMBOL_PLM_ID(SYMBOL_INDEX).EQ.'MEMORY') THEN
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SYM=SYM_MSIZ
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ELSE
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SYM=SYM_SSIZ
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ENDIF
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BUILTIN_FUNCTION=MAKE_ATOM(SYM,0,NULL,NULL,S_LONG,0,0)
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GO TO 20
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ELSEIF (MEMBER_INDEX.EQ.0) THEN
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IF (SYM_SUBS.EQ.NULL) THEN
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SIZE=SYMBOL_NBR_ELEMENTS(SYMBOL_INDEX)
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SIZE=SIZE*SYMBOL_ELEMENT_SIZE(SYMBOL_INDEX)
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ELSE
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SIZE=SYMBOL_ELEMENT_SIZE(SYMBOL_INDEX)
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ENDIF
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ELSE
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IF (MEM_SUBS.EQ.NULL) THEN
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SIZE=MEMBER_NBR_ELEMENTS(MEMBER_INDEX)*
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# MEMBER_ELEMENT_SIZE(MEMBER_INDEX)
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ELSE
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SIZE=MEMBER_ELEMENT_SIZE(MEMBER_INDEX)
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ENDIF
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ENDIF
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ENDIF
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BUILTIN_FUNCTION=MAKE_FIXED(SIZE,S_LONG)
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20 CALL MATCH(D_RP)
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ELSEIF (SYMBOL_PLM_ID(PIX).EQ.'STACKPTR') THEN
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IF (MODEL.EQ.2 .OR. MODEL.EQ.4) THEN
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SP=14
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ELSE
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SP=10
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ENDIF
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BUILTIN_FUNCTION=MAKE_REGISTER(SP,S_PTR)
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ELSEIF (SYMBOL_PLM_ID(PIX).EQ.'FRAMEPTR') THEN
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BUILTIN_FUNCTION=MAKE_REGISTER(13,S_PTR)
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ELSEIF (SYMBOL_PLM_ID(PIX)(1:2).EQ.'$_' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'DOUBLE' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'LOW' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'FLOAT' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'FIX' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'INT' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'SIGNED' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'UNSIGN') THEN
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CALL MATCH(D_LP)
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CALL PUSH(PIX,1)
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ARG=EXPRESSION(1)
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CALL POP(PIX,1)
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CALL MATCH(D_RP)
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IF (SYMBOL_PLM_ID(PIX).EQ.'$_SIGNED') THEN
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BUILTIN_FUNCTION=MAKE_NODE(OP_SIGNED,ARG,NULL,0,0,0)
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ELSEIF (SYMBOL_PLM_ID(PIX).EQ.'$_UNSIGNED') THEN
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BUILTIN_FUNCTION=MAKE_NODE(OP_UNSIGNED,ARG,NULL,0,0,0)
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ELSE
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IF (SYMBOL_PLM_ID(PIX).EQ.'INT' .OR.
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# SYMBOL_PLM_ID(PIX).EQ.'SIGNED') THEN
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ARG=MAKE_NODE(OP_WORD,ARG,NULL,S_WORD,0,0)
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ELSEIF (SYMBOL_PLM_ID(PIX).EQ.'UNSIGN') THEN
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ARG=MAKE_NODE(OP_INTEGER,ARG,NULL,S_INTEGER,0,0)
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ENDIF
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BUILTIN_FUNCTION=MAKE_NODE(OP_BYTE+SYMBOL_TYPE(PIX)-S_BYTE,
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# ARG,NULL,SYMBOL_TYPE(PIX),0,0)
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ENDIF
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ELSE
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CALL ERROR('UNIMPLEMENTED BUILTIN FUNCTION: '//
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# SYMBOL_PLM_ID(PIX))
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BUILTIN_FUNCTION=NULL
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ENDIF
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CALL DETERMINE_EFFECTS_OF_CALLING(PIX)
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RETURN
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END
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