Casting Int64 to Double doesn't convert on mode Delphi
<h3><details><summary>Original Reporter info from Mantis: <small>marcelo_rocha</small></summary><small>
- **Reporter name:** Marcelo Campos Rocha
</small></details></h3>
## Description:
The Release notes from FPC 3.0(https://wiki.freepascal.org/User_Changes_3.0#Casting_integer_variables_to_floating_point) describes a new behavior where <br/>
explicit typecasting from Int64 to Double results in a conversion. I've observed that this behavior happens on objfpc mode, but not on delphi mode. It's not the expected, because Delphi's compiler does the same conversion when doing explicit typecasting.
## Steps to reproduce:
``` pascal
program project1;
{$mode objfpc}
uses
SysUtils;
var
f: Double;
n: Int64;
begin
n := 9876543210;
f := Double(n);
writeln(f);
end.
```
## Mantis conversion info:
- **Mantis ID:** 35886
- **Version:** 3.2.0
- **Fixed in version:** 3.3.1
- **Fixed in revision:** 42507 (#1da43f67d40dd92ea2fb1cfa327d6088fa838aa7)
issue