Another take on decimal data types

[Dmitry Olshansky]

On Thursday, 11 January 2018 at 20:35:03 UTC, kdevel wrote:
> Great project!
>
> On Monday, 8 January 2018 at 22:16:25 UTC, rumbu wrote:
>> - all format specifiers implemented (%f, %e, %g, %a);
>
> Really?
>
> [...]
>
>> What's next:
>> - more tests;
>
> Here you are:
>
> ```
> import std.stdio;
> import decimal;
>
> void main ()
> {
>    decimal32 d = "0.7";
>    d *= decimal32("1.05");
>    d.writeln;
>    printf ("%.2f\n", d);


C’s printf by definition can’t be customized. What did you expect?

>
>    float f = 0.7f;
>    f *= 1.05f;
>    f.writeln;
>    printf ("%.2f\n", f);
>
>    decimal32 e = 1_000_000_000;
>    while (e > 1e-7) {
>       e.writeln;
>       e /= 10;
>    }
> }
> ```
>
> This prints:
>
>    0.735
>    0.00      <--- expected: 0.74
>    0.735
>    0.73
>              <--- loop output missing
>
> (DMD64 D Compiler v2.077.1)