On Mon, 3 Feb 2014, Sven Barth wrote:
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).
? Not in math:
-2^2 = - (2^2)
Michael.
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