[julia-users] Re: complex results - why not automatic type conversion?

[Steven G. Johnson]

On Wednesday, July 22, 2015 at 9:40:47 AM UTC-4, David P. Sanders wrote:
>
> How about 
>
> mysqrt(x::Real) = sqrt(complex(x)) 
> mysqrt(x::Complex) = sqrt(x) 
>

Just 

    mysqrt(x) = sqrt(complex(x))

should be sufficient if you always want a complex result.  complex(x) is a 
no-op if x is already complex.   But it would probably be clearer just to 
write sqrt(complex(x)) where that is what you want.