PtrInt: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: PtrInt
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| 1 | + | The data types **[`ptrInt`](https://www.freepascal.org/docs-html/rtl/system/ptrint.html)** (“Peter Int”) and **[`ptrUInt`](https://www.freepascal.org/docs-html/rtl/system/ptruint.html)** (“Pee true Int”) are signed and unsigned [[Integer|integer]] [[Data type|data types]] respectively having the same [[SizeOf|sizeOf]] of a [[Pointer|pointer]]. | |
| 2 | + | ||
| 3 | + | ## application | |
| 4 | + | ||
| 5 | + | - Use `ptrUInt` if an `integer` value will eventually be [[Typecast|typecasted]] to a `pointer`. | |
| 6 | + | - Regardless of the size taken up by its elements, an [[Array|array]] cannot have more than `high(ptrInt)` elements. Additionally, the range type must be a subrange of `ptrInt`.<sup>[1](https://www.freepascal.org/docs-html/current/user/userse62.html)</sup> | |
| 7 | + | ||
| 8 | + | ## notes | |
| 9 | + | ||
| 10 | + | - `PtrInt`/`ptrUInt` are not necessarily the same size of `ALUSInt`/`ALUUInt`. | |
| 11 | + | - The introduction of `ptrInt` was a mistake. New code should not use it. | |
| 12 | + | - [`IntPtr`](https://www.freepascal.org/docs-html/rtl/system/intptr.html) and [`nativeInt`](https://www.freepascal.org/docs-html/rtl/system/nativeint.html) are aliases for `ptrInt`. | |
| 13 | + | - [`UIntPtr`](https://www.freepascal.org/docs-html/rtl/system/uintptr.html) and [`nativeUInt`](https://www.freepascal.org/docs-html/rtl/system/nativeint.html) are aliases for `ptrUInt`. | |
| 14 | + | - `PtrInt` and `ptrUInt` are redefined by the `unit` `unicodeData`. | |
| 15 | + | ||
| 16 | + | --- | |
| 17 | + | *From the Free Pascal wiki, page "PtrInt", as it stood on 2022-01-25 after a change by Kai Burghardt, 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).* | |
| 18 | + | Category: Data types | |
| 19 | + | Category: FPC |