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Posted to dev@commons.apache.org by Eric Barnhill <er...@gmail.com> on 2018/12/13 19:39:05 UTC
[numbers/general] unlikely argument type warning
For the line:
Assert.assertFalse(zero.equals(Double.valueOf(0)));
Eclipse is producing a warning:
"Unlikely argument type for equals(): Double seems to be unrelated to
Fraction"
Does anyone have a suggestion for how to handle this warning, thank you.
Eric
Re: [numbers/general] unlikely argument type warning
Posted by Gilles <gi...@harfang.homelinux.org>.
On Thu, 13 Dec 2018 11:39:05 -0800, Eric Barnhill wrote:
> For the line:
>
> Assert.assertFalse(zero.equals(Double.valueOf(0)));
What is it testing?
Conceptually, I'd expect "assertTrue" (zero as a fraction
is equal to zero as a double).
>
> Eclipse is producing a warning:
>
> "Unlikely argument type for equals(): Double seems to be unrelated to
> Fraction"
>
> Does anyone have a suggestion for how to handle this warning, thank
> you.
Perhaps Eclipse indicates that the test is useless (since
"Double" is not a subclass of "Fraction").
And perhaps "Fraction" should overload "equals":
public boolean equals(double x, int ulp) {
return Precision.equals(doubleValue(), x, ulp);
}
public boolean equals(Number x, int ulp) {
return equals(x.doubleValue, ulp);
}
public boolean equals(double x) {
return equals(doubleValue(), x, 1);
}
Gilles
>
> Eric
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