• Per =?UTF-8?B?Tm9yZGzDtnc=?= (15/15) May 01 2018 Is there a way to convert a `double` to a `string` in a `pure`

Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:

Is there a way to convert a `double` to a `string` in a `pure` 
function?

I tried

 safe pure unittest
{
     import std.conv : to;
     const y = 3.14.to!string;
}

but it fails to compile as

`pure` function `foo.__unittest_L1_C12` cannot call impure 
function `std.conv.to!string.to!double.to`

Have anybody wrapped the corresponding C solution via, snprintf 
or gcvt in a high-level D wrapper?

Is assume `gcvt` is GNU only but that's ok with me. I assume 
`gcvt` is faster than `snprintf` in this case.