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You can - and should - expect of a compiler that it does such kind of
optimizations, but of course not of the HLASM toolkit macros - they only allow
for a structured form of control statements without branches (jumps) and labels,
but you have to do the necessary optimizations yourself. That's what ASSEMBLER
programming is all about :-)

Kind regards

Bernd



Am 25.04.2012 13:54, schrieb J.D.
> Yes, that's it !
>
> If   A<>B   I don't care about R1 and C,
> and if (it's known that) A=B  I only have to test  R1<= C
>
> I had put mental parentheses around the 2nd and 3rd conditions connected by the AND,
> never seeing that the 2nd condition was not even needed in the first place ...
>
> Many thanks !
>
>
> -----Message d'origine-----
> Objet : Re: Boolean logic in structured programming macroes
>
> The macros are only doing exactly what you are telling them - unfortunately in this
> case the second CLC in your "IF" is redundant and there is no need to code it.
>
> If "A<>B" is not satisfied, then there is no need to test "A=B" before your next condition.
>
> You should be able to code the following :
>
>            IF  (CLC,A,NE,B),OR,(CH,R1,LE,C)
>                STH   R3,NUMBER
>            ENDIF ,
>
>
> R.S.
>