Int (Variable type)

ONLINE HELP
WINDEV, WEBDEV AND WINDEV MOBILE

Version:

Home | Sign in | English

Help / WLanguage / WLanguage syntax /

Declaration and initialization
Hexadecimal value
Thousand separator
Specific features of PHP
The different types of integers
Differences between WINDEV 5.5 and WINDEV 2024

WINDEV

WEBDEV

WINDEV Mobile

Others

See also

Int (Variable type)

In french: Entier

The Int type is used to easily perform calculations on integer values. Integer variables can have a value ranging from -2 x 109 to 2 x 109 (approximately).

Remark: For advanced calculations, WLanguage offers different types of integers.

The Int type supports null values. For more details, see Allowing nullable types.

Example

i is int
i = 5

Syntax

<Variable name> is int

<Variable name 1>, <Variable name 2> are int

<Variable name>:

Name of the variable to declare.

Remarks

Declaration and initialization

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

Hexadecimal value

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

MyVariable is int
MyVariable = 0x4D5

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

Thousand separator

You can use spaces and underscore characters to separate thousands in 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 maximum value of 32-bit integers is:
2147483647 for a 32-bit integer value <=> 0x7FFFFFFF
The maximum value of 64-bit integers is:
9223372036854775807<=>0x7FFFFFFFFFFFFFFF

The different types of integers

WLanguage offers different integer types for specific operations. These types are particularly useful with Windows APIs.

	Value between

*1-byte int*	-128 and 127 (inclusive) Example: i is 1-byte int This type of variable will be automatically converted into Integer.
*2-byte int*	-32.768 and 32.767 (inclusive) Example: I is 2-byte int This type of variable will be automatically converted into Integer.
*4-byte int*	-2 x 10⁹ and 2 x 10⁹ (roughly) Example: i is 4-byte int
*8-byte int*	-9 x 10¹⁸ and 9 x 10¹⁸ (roughly) Example: i is 8-byte int
*Unsigned int*	0 and 4 x 10⁹ Example: i is unsigned int This type of variable will be automatically converted into Integer.
*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 int*	0 and 255 (inclusive) Example: i is unsigned 1-byte int This type of variable will be automatically converted into Integer.
*Unsigned 2-byte int*	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 int*	0 and 4 x 10⁹(roughly) Example: i is unsigned 4-byte int This type of variable will be automatically converted into Integer.
*Unsigned 8-byte int*	0 and 18 x 10¹⁸ Example: i is unsigned 8-byte int This type of variable will be automatically converted into Integer.
*System int*	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 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 subdirectory of the installation directory of WINDEV, WEBDEV and WINDEV Mobile.

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

Differences between WINDEV 5.5 and WINDEV 2024

The types of integers have been modified between WINDEV 5.5 and WINDEV 2024:

Type of integers in WINDEV 5.5	Type of integers in WINDEV 2024

Int	2-byte int
Unsigned int	Unsigned 2-byte int
Long int	4-byte int
Short int	Unsigned 1-byte int

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