it's time to change how things are printed

[Andrei Alexandrescu]

On 11/18/10 1:25 PM, Don wrote:
> Steven Schveighoffer wrote:
>> On Thu, 18 Nov 2010 15:13:19 -0500, Don <nospam at nospam.com> wrote:
>>
>>> Lars T. Kyllingstad wrote:
>>>> First of all, I think Andrei has already implemented this in the
>>>> write*() functions. I use this toString() style also for
>>>> std.complex.Complex, and I can print complex numbers no problem.
>>>
>>> Really? It doesn't work for me.
>>>
>>> import std.complex;
>>> import std.stdio;
>>>
>>> void main()
>>> {
>>> cdouble z2 = 10 + 1.5e-6i;
>>> Complex!(double) z;
>>> z.re = 10;
>>> z.im = 1.5e-6;
>>> writefln("z= %.16f z2 = %.16f", z, z2);
>>> }
>>>
>>> Prints:
>>> z = 10+1.5e-06i z2 = 10.0000000000000000+0.0000015000000000i
>>
>> Haven't tested, but docs state that
>>
>> "Note that complex numbers are floating point numbers, so the only
>> valid format characters are 'e', 'f', 'g', 'a', and 's', where 's'
>> gives the default behaviour. ***Positional parameters are not valid in
>> this context.***"
>>
>> I'd suggest trying one of those other format types without the numeric
>> parts.
>>
>> -Steve
>
> writefln("z = %f z2 = %f", z, z2);
> z = 10+1.5e-06i z2 = 10.000000+0.000001i
> writefln("z = %e z2 = %e", z, z2);
> z = 10+1.5e-06i z2 = 1.000000e+01+1.500000e-06i
> writefln("z = %a z2 = %a", z, z2);
> z = 10+1.5e-06i z2 = 0x1.4p+3+0x1.92a737110e454p-20i

Clearly there's a bug in the formatting logic. Should be easy to fix, 
but I'm groping for time at the moment. Don, could you please 
bugzillize? Thanks.

Andrei