Navigation:  ThinBASIC Language > Data types and variables >

Numeric variables

Previous pageReturn to chapter overviewNext page

 

Numeric variables

 

The following numeric data types are supported:

Group

Data type

Bits

Bytes

Range from

Range to

Digits of precision

Integer data types

BYTE

8

1

0

255

n/a


INTEGER

16

2

-32768

32767

n/a


WORD

16

2

0

65535

n/a


DWORD

32

4

0

4294967295

n/a


LONG

32

4

-2147483648

2147483647

n/a


QUAD

64

8

-9.22x10^18

+9.22x10^18

n/a



 

 

 

 

 

Floating point data types

SINGLE

32

4

8.43x10^-37

3.40x10^38

6


DOUBLE

64

8

4.19x10^-307

1.79x10^308

16


EXTENDED (EXT)

80

10

3.4x10^-4932

1.2x10^4932

18


CURRENCY

64

8

-9.22x10^14

+9.22x10^14

4

 

Restrictions

 

1.thinBasic perform all internal numeric calculations using EXTENDED (abbreviated EXT) data type.
2.due to lack of precision (only 6 digits), we suggest to use SINGLE data type only when interfacing to external libraries that explicitly ask for SINGLE parameters passed by reference.
3.Numeric data type is an alias of EXT (Extended)

 

 

Numeric alias

 

In order to improve possibility to convert source code from/to other programming languages, thinBasic supports alias for floating point and integer numeric data types:

Alias

Equivalent to thinBasic data type

Int16

INTEGER

UInt16

WORD

UInt32

DWORD

Int32

LONG

Int64

QUAD

 


Float16

SINGLE

Float32

DOUBLE

Float80

EXTENDED (EXT)