Am 03.02.2014 12:04, schrieb Michael Van Canneyt:
On Mon, 3 Feb 2014, Sven Barth wrote:
Am 03.02.2014 08:58, schrieb Michael Van Canneyt:
As for unary minus: this is the same as a binary minus in arithmatic
expressions.
Not quite. Take this example:
=== output end ===
So unary minus (and also unary plus which is a valid operator as
well!) binds stronger than multiplication.
Then that is an anomaly introduced by operator overloading.
In math, -2^2 = -4
Yes and the same is true in FPC with operator overloading. If you add a
** operator overload (which uses Trunc(Power(aLeft.i, aRight.i)) ) and
have this expression: -t1 ** t2 with t1.i = 2 and t2.i = 2 the result
will be -4 as well.
Please keep in mind that -2^2 is (-2) * (-2).
Regards,
Sven
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