You could just convert any Number into a Double:
(if (number? x) (double x) x)
Or create a protocol for the conversion. If you're concerned about
performance, measure the result with a benchmarking library like Criterium.
- James
On 2 May 2015 at 12:53, Alan Forrester <alanmichaelforres...@googlemail.com>
wrote:
> Hello
>
> I'm currently trying to wrap org.apache.commons.math3.complex
>
>
> http://commons.apache.org/proper/commons-math/apidocs/org/apache/commons/math3/complex/Complex.html
>
> to make a complex number library and I have a problem. Many of the
> methods won't work with all Clojure number types. For example,
>
> (.add (Complex. 1.0 2.0) 2)
>
> produces an IllegalArgumentException. The method only works if at
> least one of the arguments is a complex number although the other can
> be a double.
>
> What would be the best way of handling this? Should I just wrap add
> the way it is and explain what types are expected in the
> documentation, or is there a better way of dealing with this issue
> that would allow Clojure number types to be used seamlessly?
>
> Alan
>
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