The different types of integers

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Types of integers
Different types of integers are available in WLanguage
Notes
Default value
Hexadecimal value
Thousand separator
Specific features of PHP
Differences between WINDEV 5.5 and WINDEV 25

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WEBDEV

WINDEV Mobile

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See also

The different types of integers

Types of integers

Different types of integers are available in WLanguage

	Value included between

*Integer*	-2 x 10⁹ and 2 x 10⁹ (roughly) Example: i is int i = 5
*1-byte integer*	-128 and 127 (inclusive) Example: i is 1-byte int This type of variable will be automatically converted into Integer. This type of variable will be automatically converted into Integer. Versions 23 and later The 1-byte Integer variables are now available. New in version 23 The 1-byte Integer variables are now available. The 1-byte Integer variables are now available.
*2-byte integer*	-32.768 and 32.767 (inclusive) Example: I is 2-byte int This type of variable will be automatically converted into Integer. This type of variable will be automatically converted into Integer. Versions 23 and later The 2-byte Integer variables are now available. New in version 23 The 2-byte Integer variables are now available. The 2-byte Integer variables are now available.
*4-byte integer*	-2 x 10⁹ and 2 x 10⁹ (roughly) Example: i is 4-byte int
*8-byte integer*	-9 x 10¹⁸ and 9 x 10¹⁸ (roughly) Example: i is 8-byte int
*Unsigned integer*	0 and 4 x 10⁹ Example: i is unsigned int This type of variable will be automatically converted into Integer.
Versions 16 and later *Byte* New in version 16 *Byte* *Byte*	0 and 255 (inclusive) This type is equivalent to the unsigned 1-byte integer. Example: i is byte This type of variable will be automatically converted into Integer.
*Unsigned 1-byte integer*	0 and 255 (inclusive) Example: i is unsigned 1-byte int This type of variable will be automatically converted into Integer.
*Unsigned 2-byte integer*	0 and 65.535 (inclusive) Example: i is unsigned 2-byte int This type of variable will be automatically converted into Integer.
*Unsigned 4-byte integer*	0 and 4 x 10⁹(about) Example: i is unsigned 4-byte int This type of variable will be automatically converted into Integer.
*Unsigned 8-byte integer*	0 and 18 x 10¹⁸ Example: i is unsigned 8-byte int This type of variable will be automatically converted into Integer.
*System integer*	automatically adapts to the size supported by the compilation mode (4 bytes for a program compiled in 32 bits, 8 bytes for a program compiled in 64 bits). Example: i is system int Versions 22 and later Remark: SystemIntegerToInteger is used to convert a system integer into a 4-byte integer. New in version 22 Remark: SystemIntegerToInteger is used to convert a system integer into a 4-byte integer. Remark: SystemIntegerToInteger is used to convert a system integer into a 4-byte integer.

The exact values for these different types of integers can be found in the Limits.wl file found in the Personal\External sub-directory of the setup directory of WINDEV, WEBDEV and WINDEV Mobile.

Remark: All the advanced types (different from the "Integer" type) are recommended when using the Windows APIs.

Notes

Default value

An "Integer" variable that is declared but not initialized is equal to 0.

Hexadecimal value

To enter an hexadecimal value in the code, the hexadecimal value must be prefixed by "0x".

MyVariable is int
MyVariable = 0x4D5

Versions 23 and later
Remark: The '_' character can be used as block separator in the hexadecimal numbers. The blocks can have a size equal to 2, 4 or 8 characters long.
Example:

Nb1 is int = 0x_12_15_A4_BC
Nb2 is int = 0x_CD4A_DE58

New in version 23
Remark: The '_' character can be used as block separator in the hexadecimal numbers. The blocks can have a size equal to 2, 4 or 8 characters long.
Example:

Nb1 is int = 0x_12_15_A4_BC
Nb2 is int = 0x_CD4A_DE58

Remark: The '_' character can be used as block separator in the hexadecimal numbers. The blocks can have a size equal to 2, 4 or 8 characters long.
Example:

Nb1 is int = 0x_12_15_A4_BC
Nb2 is int = 0x_CD4A_DE58

Versions 23 and later

Thousand separator

The 'Space' character or the '_' character can be used as thousand separator in the numbers. For example:

num1 is int
num1 = 123 456
let num2 = 246_789

New in version 23

Thousand separator

The 'Space' character or the '_' character can be used as thousand separator in the numbers. For example:

num1 is int
num1 = 123 456
let num2 = 246_789

Thousand separator

The 'Space' character or the '_' character can be used as thousand separator in the numbers. For example:

num1 is int
num1 = 123 456
let num2 = 246_789

Specific features of PHP

Numbers (real, integer, currency, numeric) cannot exceed 14 significant digits in PHP. If they exceed this limit, they are rounded to 14 digits.
The integers in 32 bits have for maximum value:
2147483647 for 32 bits <=> 0x7FFFFFFF
The integers in 64 bits have for maximum value:
9223372036854775807<=>0x7FFFFFFFFFFFFFFF

Differences between WINDEV 5.5 and WINDEV 25

The types of integers have been modified between WINDEV 5.5 and WINDEV 25:

Type of integers in WINDEV 5.5	Type of integers in WINDEV 25

Integer	2-byte integer
Unsigned integer	Unsigned 2-byte integer
Long integer	4-byte integer
Short integer	Unsigned 1-byte integer

In WINDEV 5.5, the integers were 2-byte integers by default. Since the versions 7.x, the integers are 4-byte integers by default.