numeric types need "conjugate" operator

[coke]

Originally entered by Dave Whipp as https://rt.perl.org/rt3/Ticket/Display.html?id=76602

I was looking at colomon's Vector.pm in github, and noticed that
Vector::length is defined as { sqrt( self dot self ) }. This is
obviously incorrect for complex numbers: it should be { sqrt( self dot
conjugate self ) } (for some syntax of "conjugate")

I can't just add the method to the Complex class, because then the
Vector code would fail ("method not found") for all non-complex
numeric types (for which conjugation is an identity operation).

[colomon]

Seems reasonable to me. I have to admit I thought complex conjugate was already in there. I will take a stab at it after rehearsal tonight if no one beats me to it.

[dwhipp]

Yes, I added it to Rakudo a couple of years back ... not sure if it made it
to the spec.
rakudo/rakudo@cd1154b

On Thu, Mar 28, 2013 at 5:14 PM, colomon notifications@github.com wrote:

Seems reasonable to me. I have to admit I thought complex conjugate was
already in there. I will take a stab at it after rehearsal tonight if no
one beats me to it.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/33#issuecomment-15622833
.

[leto]

+1

[colomon]

Complex conjugate is already in there, as conj. It was also as conjugate in one place, I have corrected that. I'm working on updating Math:: Vector, and may add a few additional tests to roast as well.