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https://issues.apache.org/jira/browse/MATH-614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068257#comment-13068257
]
Arne Plöse commented on MATH-614:
---------------------------------
What about this:
{code}
@Override
public String toString() {
if (isNaN) {
return String.format("%s + %si", Double.toString(Double.NaN),
Double.toString(Double.NaN));
}
if (imaginary == 0.0) {
return Double.toString(real);
}
if (imaginary > 0) {
return String.format("%s + %si", Double.toString(real),
Double.toString(imaginary));
}
return String.format("%s - %si", Double.toString(real),
Double.toString(Math.abs(imaginary)));
}
{code}
testcase:
{code}
@Test
public void testToString() {
Assert.assertEquals("NaN + NaNi", new Complex(nan, inf).toString());
Assert.assertEquals("1.0", Complex.ONE.toString());
Assert.assertEquals("0.0 + 1.0i", Complex.I.toString());
Assert.assertEquals("0.0 - 1.0i", new Complex(0.0, - 1.0).toString());
Assert.assertEquals("Infinity + Infinityi", new Complex(inf,
inf).toString());
Assert.assertEquals("Infinity - Infinityi", new Complex(inf, -
inf).toString());
}
{code}
> "toString" method for "Complex"
> -------------------------------
>
> Key: MATH-614
> URL: https://issues.apache.org/jira/browse/MATH-614
> Project: Commons Math
> Issue Type: Wish
> Reporter: Gilles
> Assignee: Gilles
> Priority: Trivial
> Fix For: 3.0
>
> Attachments: math.patch
>
>
> Class "Complex" (in package "complex") lacks a "toString()" method.
> [Request from Arne Ploese on the "dev" ML.]
> I also propose to slightly modify the "format" method in "ComplexFormat" so
> that the stringified version of "Complex(1, 1)" is "1 + i" instead of "1 +
> 1i".
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