Andrei Alexandrescu wrote:
On 11/18/10 1:25 PM, Don wrote:
Steven Schveighoffer wrote:
On Thu, 18 Nov 2010 15:13:19 -0500, Don <[email protected]> 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
http://d.puremagic.com/issues/show_bug.cgi?id=5237
