Sanyo MBC-550 Series User Manual page 92

A logical expression evaluates the result with the
following procedure:
1.
When more than two logical operators are included:
Execute the processing in accordance
with the priorities.
a.
If the two different logical operators
have the same priority
left to right.
b.
execute from
2. When the value of <data> is assigned with either -1
(true) or 0 (false), the evaluation of the logical
expression will become -1 or 0.
When an integer is included in the evaluation
result of <data item>, the logical operation is
performed with binary notation (binary integers are
allocated for each bit) regarding the result as a
binary number. The evaluation result will be converted
into the integer.
3.
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