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I noticed that in Home A OR B AND C is treated as A OR (B AND C) as expected with AND having a higher precedence than OR.

However, in CAS a OR b AND c is treated as (a OR b) AND c, evaluating left to right with AND and OR having the same precedence.

For example:
Home:
true OR false AND false --> 1

CAS (and XCAS)
true OR false AND false --> false

Is this a bug, or is this the intended behavior?

Indeed, and and or have the same precedence in CAS because they are parsed with the same parser token in input_parser.yy (%left T_AND_OP), cf. input_lexer.ll

Code:

"&&"                    index_status(yyextra)=0; (*yylval)=gen(at_and,2); return T_AND_OP;

...

"||"                    index_status(yyextra)=0; (*yylval)=gen(at_ou,2); return T_AND_OP;

The same applies for xor and &

(10-14-2022 06:18 AM)parisse Wrote: [ -> ]Indeed, and and or have the same precedence in CAS ...

Okay, that's good to know. Thank you for clarifying.

Wes Loewer

parisse

Wes Loewer