Округление до цифр не равных нулю

program Project2;
 
{$APPTYPE CONSOLE}
 
uses
  SysUtils;
function my_round(x:extended):string;
var s,s1:string;
    i:integer;
begin
s:=floattostr(x);
s1:=copy(s,1,pos('.',s));//÷èñëî ïî òî÷êó
delete(s,1,pos('.',s));
i:=1;
while (i<=length(s))and(s[i]='0') do
 begin
  s1:=s1+s[i];
  i:=i+1
 end;
result:=s1+s[i]+s[i+1];
end;
var a:extended;
begin
a:=1/1038;
writeln(floattostrF(a,fffixed,20,15));
writeln(my_round(a));
readln
end.

unit Unit1;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
 
type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Button1: TButton;
    Edit2: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
 
implementation
 
{$R *.dfm}
 
function my_round(x:extended):string;
var s,s1:string;
    i:integer;
begin
s:=floattostr(x);
s1:=copy(s,1,pos('.',s));
delete(s,1,pos('.',s));
i:=1;
while (i<=length(s))and(s[i]='0') do
 begin
  s1:=s1+s[i];
  i:=i+1
 end;
result:=s1+s[i]+s[i+1];
end;
 
procedure TForm1.Button1Click(Sender: TObject);
var a:extended;
begin
a:=1/1038;
Edit1.Text := floattostrF(a,fffixed,20,15);
Edit2.Text := my_round(a);
end;
 
end.

function my_round(x:extended):string;
var s,s1:string;
    i:integer;
    c:char;
begin
s:=floattostr(x);
c:=decimalseparator;
s1:=copy(s,1,pos(c,s));
delete(s,1,pos(c,s));
i:=1;
while (i<=length(s))and(s[i]='0') do
 begin
  s1:=s1+s[i];
  i:=i+1
 end;
result:=s1+s[i]+s[i+1];
end;

var a:extended;
  s: string;
begin
 a:=1/10546;
 
s:= floattostrF(a,ffExponent,2,0);
Edit1.Text:=floattostrF(a,fffixed,30,30);
Edit2.Text := floattostrF(Strtofloat(s),fffixed,25,StrToInt(copy(s,pos('-',s)+1,Length(s)))+1);
end;