floating point precision

[Mail Mantis]

All is passed, to print, say, 50 signs after period use following:
writefln("%.50f", var);


2012/1/12 dsmith <dsmith at nomail.com>:
> How do you increase floating point precision beyond the default of 6?
> example:
>
> double var = exp(-1.987654321123456789);
> writeln(var);
>
> --> 0.137016
>
> Assuming this result is only an output format issue and that operations are
> still using double's 64 places, if var above is passed to a function, are all
> 64 places passed?  Must it be passed by reference to make it so?
>
>