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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 2024
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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
Universal Windows 10 App This type of variable will be automatically converted into Integer.
  • 2-byte integer
-32.768 and 32.767 (inclusive)
Example:
I is 2-byte int
Universal Windows 10 App This type of variable will be automatically converted into Integer.
  • 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
Universal Windows 10 AppAndroidAndroid Widget 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
Universal Windows 10 AppAndroidAndroid Widget 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
Universal Windows 10 AppAndroidAndroid Widget 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
Universal Windows 10 AppAndroidAndroid Widget This type of variable will be automatically converted into Integer.
  • Unsigned 4-byte integer
0 and 4 x 109 (roughly)
Example:
i is unsigned 4-byte int
Universal Windows 10 AppAndroidAndroid Widget 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
Universal Windows 10 AppAndroidAndroid Widget 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
WINDEVWEBDEV - Server codeUniversal Windows 10 AppiPhone/iPadApple Watch 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.
Notes

Default value

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
PHP

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
WINDEVWEBDEV - Server codeReports and QueriesWindowsJavaUser code (UMC)PHP

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 5.5Type of integers in WINDEV 2024
Integer2-byte integer
Unsigned integerUnsigned 2-byte integer
Long integer4-byte integer
Short integerUnsigned 1-byte integer
In WINDEV 5.5, integers were 2-byte integers by default. Since the versions 7.x, integers are 4-byte integers by default.
Minimum version required
  • Version 9
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Last update: 09/07/2023

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