Dear list.
Over the last couple of days i've been trying out different things with
variants, but I always seem to end up in the same situation: When
working with conversion between Extended and Variant, a small part of
the precision in the Extended is lost.
This would normally not pose an issue, except for the fact that
comparing two Extended variables after one was converted to a variant
and back, the two numbers are NOT equal. (I've posted a small example at
the bottom of the mail).
I did some digging down the FPC code and found that in the TVarData type
has not extended type. Although the assignment operator for variants
does include a specific extended version, data is copied into a double type.
Not knowing much about the inner working of variants I don't know the
reason for this, is it a bug or does the extended type not work inside
the TVarData?
I would be glad if someone could give me some feedback on this.
Kind regards,
Torsten Bonde Christiansen.
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