std.complex

[Joseph Rushton Wakeling]

On 23/11/13 08:43, Ali Çehreli wrote:
> import std.stdio;
> import std.complex;
>
> void main()
> {
>      writeln(complex(1.0L, -real.infinity) * complex(0.0, 1.0L));
>      writeln((1L - ireal.infinity) * 1i);
> }
>
>
> The output:
>
> inf-nani    <-- "incorrect" according to the quoted page
> inf+1i      <-- correct

But, still operating with builtins,

     writeln((1L - ireal.infinity) * (0 + 1i));

and you get again

     inf-nani

Basically, your nice result with (1L - ireal.infinity) * 1i comes about because 
in this case, you're not multiplying two complex numbers, but one complex and 
one imaginary.  In the latter case, there's no 0 to multiply by infinity.