simple type: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: simple type
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| 1 | + | A **simple type** is a single value which can be stored in an [[Identifier]]. Simple types are predefined by the compiler, but are not [[Reserved word|reserved words]]. While it is not recommended, they can be redefined. | |
| 2 | + | ||
| 3 | + | Simple types predefined by the compiler are: | |
| 4 | + | ||
| 5 | + | | name | bytes | comment | | |
| 6 | + | |----|----|----| | |
| 7 | + | | boolean | 1 | | | |
| 8 | + | | cardinal | 4 | | | |
| 9 | + | | char | 1 (unless you use {\$mode DelphiUnicode} or {\$ModeSwitch UnicodeStrings}, then it will be 2) | most likely 1 | | |
| 10 | + | | int8 | 1 | by definition | | |
| 11 | + | | int16 | 2 | by definition | | |
| 12 | + | | int32 | 4 | by definition | | |
| 13 | + | | int64 | 8 | by definition | | |
| 14 | + | | integer | either 2 or 4, depends on compilation mode | | | |
| 15 | + | | shortint | 1 | \<= integer | | |
| 16 | + | | smallint | 2 | \<= integer | | |
| 17 | + | | longint | 4 | \>= integer | | |
| 18 | + | | byte | 1 | by definition | | |
| 19 | + | | word | 2 | by definition | | |
| 20 | + | | dword | 4 | by definition | | |
| 21 | + | | qword | 8 | by definition | | |
| 22 | + | | pointer | depends on target cpu bitness: on 32-bit it is 4, on 64-bit it is 8 | | | |
| 23 | + | | single | 4 | single precision float | | |
| 24 | + | | double | 8 (if the system supports this type, otherwise it's an alias for single) | double precision float | | |
| 25 | + | | extended | 10 (if the system supports this type, otherwise it's an alias for double) | extended precision float | | |
| 26 | + | | [[real]] | 4 or 8 (platform dependant) | | | |
| 27 | + | | currency | 8 | | | |
| 28 | + | ||
| 29 | + | --- | |
| 30 | + | *From the Free Pascal wiki, page "simple type", as it stood on 2023-01-30 after a change by Bart, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* |