//十进制 to 二进制
function IntToBin(Value: LongInt;Size: Integer): String;
var
 i: Integer;
begin
 Result:=\'\';
 for i:=Size-1 downto 0 do begin
  if Value and (1 shl i)<>0 then begin
  Result:=Result+\'1\';
  end else begin
  Result:=Result+\'0\';
  end;
 end;
end;

//二进制 to 十进制

function BintoInt(Value: String): LongInt;
  var
  i,Size: Integer;
  begin
  Result:=0;
  Size:=Length(Value);
  for i:=Size downto 1 do
  begin
  if Copy(Value,i,1)=\'1\' then
  Result:=Result+(1 shl (Size-i));
  end;
  end;

  function floatBintoInt(Value: String): real;
  var
  i,Size: Integer;
  begin
  Result:=0;
  Size:=Length(Value);
  for i:=Size downto 1 do
  begin
  if Copy(Value,i,1)=\'1\' then
  Result:=Result+1/(1 shl i);
  end;
  end;

//十六进制 to 二进制

function HextoBinary(Hex:string):string;
const
  BOX: array [0..15] of string =
  (\'0000\',\'0001\',\'0010\',\'0011\',
  \'0100\',\'0101\',\'0110\',\'0111\',
  \'1000\',\'1001\',\'1010\',\'1011\',
  \'1100\',\'1101\',\'1110\',\'1111\');
var
  i:integer;
begin
  for i:=Length(Hex) downto 1 do
  Result:=BOX[StrToInt(\'$\'+Hex[i])]+Result;
end;

//十六进制 to 十进制 浮点型
function HextoFloat(s:string):real;
var b,temp:string;
  e:integer;
  f:real;
begin
  b:=HextoBinary(s);
  temp := copy(b,2,8);
  e:=BintoInt(temp)-127;
  temp := copy(b,10,23);
  f := 1+floatBintoInt(temp);
  if(copy(b,1,1)=\'0\')then
  result := power(2,e)*f
  else
  result :=-power(2,e)*f;
end;