Files

80 lines
1.5 KiB
ObjectPascal

unit InverseZUnit;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
StdCtrls, ExtCtrls;
type
{ TInversezForm }
TInversezForm = class(TForm)
Bevel1: TBevel;
CancelBtn: TButton;
ComputeBtn: TButton;
Panel1: TPanel;
ResetBtn: TButton;
ReturnBtn: TButton;
ZEdit: TEdit;
Label2: TLabel;
ProbEdit: TEdit;
Label1: TLabel;
procedure ComputeBtnClick(Sender: TObject);
procedure FormActivate(Sender: TObject);
procedure ResetBtnClick(Sender: TObject);
private
{ private declarations }
public
{ public declarations }
end;
var
InversezForm: TInversezForm;
implementation
{$R *.lfm}
uses
Math, MathUnit, Utils;
{ TInversezForm }
procedure TInversezForm.ResetBtnClick(Sender: TObject);
begin
ProbEdit.Text := '';
ZEdit.Text := '';
end;
procedure TInversezForm.ComputeBtnClick(Sender: TObject);
var
prob, zScore: double;
begin
if not MyTryStrToFloat(ProbEdit.Text, prob) then
begin
ProbEdit.SetFocus;
ErrorMsg('No valid number.');
exit;
end;
zScore := InverseNormalDist(prob);
ZEdit.Text := Format('%6.4f', [zScore]);
end;
procedure TInversezForm.FormActivate(Sender: TObject);
var
w: Integer;
begin
w := MaxValue([CancelBtn.Width, ResetBtn.Width, ComputeBtn.Width, ReturnBtn.Width]);
CancelBtn.Constraints.MinWidth := w;
ResetBtn.Constraints.MinWidth := w;
ComputeBtn.Constraints.MinWidth := w;
ReturnBtn.Constraints.MinWidth := w;
end;
end.