Re: Convert double to long if lossless

[Per Nordlöw via Digitalmars-d-learn]

On Tuesday, 19 January 2021 at 16:14:17 UTC, drug wrote:
   https://dlang.org/phobos/std_bitmanip.html#FloatRep

Doesn't this pattern already cover all possible cases of `value` 
needed?

void f(double value)
{
    auto lvalue = cast(long)value;
    if (lvalue == value) // `value` lacks fraction and in range 
[long.min .. long.max]
    {
        // use long lvalue
        return;
    }
    // use double value
}