| Data model | short (integer) | int | long (integer) | long long | pointers, size_t |
Sample operating systems |
|---|---|---|---|---|---|---|
| SILP64 | 64 | 64 | 64 | 64 | 64 | Classic UNICOS[41] (versus UNICOS/mp, etc.) |
| ILP64 | 16 | 64 | 64 | 64 | 64 | HAL Computer Systems port of Solaris to the SPARC64 |
| LLP64, IL32P64 |
16 | 32 | 32 | 64 | 64 | Microsoft Windows (x86-64 and IA-64) using Visual C++; and MinGW |
| LP64, I32LP64 |
16 | 32 | 64 | 64 | 64 | Most Unix and Unix-like systems, e.g., Solaris, Linux, BSD, macOS. Windows when using Cygwin; z/OS |
参考链接
32位和64位系统区别及int字节数
64-Bit Programming Models: Why LP64?
64-bit computing
What decides the sizeof an integer?