//from
http://kingron.myetang.com/zsfunc01.htm(*//
标题:无限进制转换
说明:使用于数学领域进制之间相互转换
设计:Zswang
日期:2002-01-24
支持:[email protected]
//*)///////Begin Source
const
cScaleChar = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';function IntPower(Base, Exponent: Integer): Integer; { 返回Base的Exponent次方 }
var
I: Integer;
begin
Result := 1;
for I := 1 to Exponent do
Result := Result * Base;
end; { IntPower }function IntToDigit(mNumber: Integer; mScale: Byte;
mLength: Integer = 0): string;
{ 返回整数的进制表示;mScale指定多少进制;mLength指定长度,长度不足时向前补0 }
var
I, J: Integer;
begin
Result := '';
I := mNumber;
while (I >= mScale) and (mScale > 1) do begin
J := I mod mScale;
I := I div mScale;
Result := cScaleChar[J + 1] + Result;
end;
Result := cScaleChar[I + 1] + Result;
for I := 1 to mLength - Length(Result) do Result := '0' + Result;
end; { IntToDigit }function DigitToInt(mDigit: string; mScale: Byte): Integer;
{ 返回进制表示转换成整数;mScale指定多少进制 }
var
I: Byte;
L: Integer;
begin
Result := 0;
mDigit := UpperCase(mDigit);
L := Length(mDigit);
for I := 1 to L do
Result := Result + (Pos(mDigit[L - I + 1], cScaleChar) - 1) *
IntPower(mScale, I - 1);
end; { DigitToInt }
///////End Source///////Begin Demo
procedure TForm1.Button1Click(Sender: TObject);
begin
Edit1.Text := IntToDigit(StrToIntDef(Edit2.Text, 0), 16);
end;procedure TForm1.Button2Click(Sender: TObject);
begin
Edit2.Text := IntToStr(DigitToInt(Edit1.Text, 16));
end;
///////End Demo
http://kingron.myetang.com/zsfunc01.htm(*//
标题:无限进制转换
说明:使用于数学领域进制之间相互转换
设计:Zswang
日期:2002-01-24
支持:[email protected]
//*)///////Begin Source
const
cScaleChar = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';function IntPower(Base, Exponent: Integer): Integer; { 返回Base的Exponent次方 }
var
I: Integer;
begin
Result := 1;
for I := 1 to Exponent do
Result := Result * Base;
end; { IntPower }function IntToDigit(mNumber: Integer; mScale: Byte;
mLength: Integer = 0): string;
{ 返回整数的进制表示;mScale指定多少进制;mLength指定长度,长度不足时向前补0 }
var
I, J: Integer;
begin
Result := '';
I := mNumber;
while (I >= mScale) and (mScale > 1) do begin
J := I mod mScale;
I := I div mScale;
Result := cScaleChar[J + 1] + Result;
end;
Result := cScaleChar[I + 1] + Result;
for I := 1 to mLength - Length(Result) do Result := '0' + Result;
end; { IntToDigit }function DigitToInt(mDigit: string; mScale: Byte): Integer;
{ 返回进制表示转换成整数;mScale指定多少进制 }
var
I: Byte;
L: Integer;
begin
Result := 0;
mDigit := UpperCase(mDigit);
L := Length(mDigit);
for I := 1 to L do
Result := Result + (Pos(mDigit[L - I + 1], cScaleChar) - 1) *
IntPower(mScale, I - 1);
end; { DigitToInt }
///////End Source///////Begin Demo
procedure TForm1.Button1Click(Sender: TObject);
begin
Edit1.Text := IntToDigit(StrToIntDef(Edit2.Text, 0), 16);
end;procedure TForm1.Button2Click(Sender: TObject);
begin
Edit2.Text := IntToStr(DigitToInt(Edit1.Text, 16));
end;
///////End Demo
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S := IntToHex(I);
I := StrToIntDef('0x' + S, 0);
BinToHex()二进制转换十六进制
IntToHex()
StrToInt() 要求在字符串前面添加$即可!
把一个整数变成二进制字符串
function IntToBinaryStr(TheVal: LongInt): string;
var
counter: LongInt;
begin
{This part is here because we remove leading zeros. That
means that a zero value would return an empty string.} if TheVal = 0 then begin
result := '0';
exit;
end; result := '';
counter := $80000000; {Suppress leading zeros}
while ((counter and TheVal) = 0) do begin
counter := counter shr 1;
if (counter = 0) then break; {We found our first "1".}
end; while counter > 0 do begin
if (counter and TheVal) = 0 then result := result + '0'
else result := result + '1';
counter := counter shr 1;
end;