From: arne@vajhoej.dk   
      
   On 1/31/2025 7:38 PM, Dave Froble wrote:   
   > On 1/31/2025 11:53 AM, Arne Vajhøj wrote:   
   >> On 1/31/2025 11:39 AM, Dave Froble wrote:   
   >>> On 1/31/2025 10:18 AM, Arne Vajhøj wrote:   
   >>>> Is it common to use:   
   >>>>   
   >>>> declare integer constant TRUE = -1   
   >>>> declare integer constant FALSE = 0   
   >>>>   
   >>>>   
   >>>> ?   
   >>>   
   >>> It works.  Doesn't really matter if declared a constant.  Zero is false,   
   >>> anything else is true.  Using 1 vs -1 has been more my experience.   
   >>   
   >> I got the impression that the manual/compiler prefer -1 over 1.   
   >   
   > Manuals usually have a preference, but, can be incomplete.   
   >   
   >> print not 0%   
   >>   
   >> does print -1.   
   >   
   > That is an operation to flip the bits.  The opposite of 0000000000000000   
   > is 1111111111111111 ...   
      
   Ah - yes. The manual say that NOT is bit wise but AND, OR and XOR   
   are logical.   
      
      
   Operator Example Meaning   
   NOT NOT A% The bit-by-bit complement of A%. If A% is true (–1), NOT   
   A% is false (0).   
   AND A% AND B% The logical product of A% and B%. A% AND B% is true   
   only if both A% and B% are true.   
   OR A% OR B% The logical sum of A% and B%. A% OR B% is false only if   
   both A% and B% are false; otherwise, A% OR B% is true.   
   XOR A% XOR B% The logical exclusive OR of A% and B%. A% XOR B% is   
   true if either A% or B% is true but not if both are true.   
      
      
   Arne   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)