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Adam Glauser wrote:
Schmidt, Mihael wrote:
I got a character field (length 2) and want to check if the 7th bit is
turned on (regardless of the state of the other bits). Any idea?
if (%bitand(charField : x'40') = x'40');
// bit 7 is on
endif;
That is, assuming you mean the 7th bit counting from the least
significant bit (which I think is the usual way).
FWIW, this only works if you use a literal, named constant, or numeric
variable for the mask (the x'40' part). I checked the manual, because I
realized that I forgot to take in to account that your character field
is 2 long.
Here's what the manual says about operands of different lengths:
The length is the length of the largest operand. If the arguments have
different lengths, they are padded on the left with bit zeros for
numeric arguments. Shorter character arguments are padded on the right
with bit ones.
So it appears that the literal x'40' is treated as numeric, and padded
on the left with x'00', which is what we want in this case.
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