[fpc-pascal] round(2.5)=2

[Jonas Maebe]

On 12/06/18 23:12, Klaus Hartnegg wrote:
> This behaviour does have advantages in the special case of adding up 
> many rounded numbers, but it ruins the graphics output of my software. 
> It should at least be configurable. And in {$mode tp} it should behave 
> like Turbo Pascal, because that's what this mode is made for.

The basic issue is that FPC doesn't support the 6 byte real type used by 
TP in {$n-}, nor the associated behaviours such as rounding, 
range/precision cut-offs etc. FPC indeed can only support TP {$n+} mode 
compatibility at this time (and even that is not always exact, as it 
depends on the FPU precision support by the hardware and OS).


Jonas