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decuslib10-05
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43,50337/23/boolfu.mac
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COMMENT * SIMULA specification;
OPTIONS(/E:QUICK,boolfunc);
INTEGER PROCEDURE boolfunc(f,x,y); INTEGER f,x,y;
COMMENT Bitwise Boolean function fu(f) of (x,y).
For definition of fu(f), see below.
;
!*;! MACRO-10 code !*;!
TITLE boolfunc
ENTRY boolfunc
SUBTTL SIMULA utility, Lars Enderin May 1977
;!*** Copyright 1977 by the Swedish Defence Research Institute. ***
;!*** Copying is allowed. ***
;! Local definitions ;!
f==<result==0>
x==1
y==2
XTAC==2
fu: SETZ ;! f=00 (2R0000) - FALSE
AND y(XTAC) ;! f=01 (2R0001) - x AND y
ANDCA y(XTAC) ;! f=02 (2R0010) - NOT x AND y
SETM y(XTAC) ;! f=03 (2R0011) - y
ANDCM y(XTAC) ;! f=04 (2R0100) - x AND NOT y
SETA ;! f=05 (2R0101) - x
XOR y(XTAC) ;! f=06 (2R0110) - x XOR y
IOR y(XTAC) ;! f=07 (2R0111) - x OR y
ANDCB y(XTAC) ;! f=08 (2R1000) - NOT x AND NOT y (NAND)
EQV y(XTAC) ;! f=09 (2R1001) - x EQV y
SETCA ;! f=10 (2R1010) - NOT x
ORCA y(XTAC) ;! f=11 (2R1011) - NOT x OR y (IMP)
SETCM y(XTAC) ;! f=12 (2R1100) - NOT y
ORCM y(XTAC) ;! f=13 (2R1101) - x OR NOT y
ORCB y(XTAC) ;! f=14 (2R1110) - NOT x OR NOT y (NOR)
SETO ;! f=15 (2R1111) - TRUE always
OPDEF RET [POPJ 17,]
X1==1
boolfunc:
MOVE x(XTAC)
HRRZ X1,f(XTAC)
ANDI X1,17
XCT fu(X1)
MOVEM result(XTAC)
RET
END;