| Data Type | Ubuntu x86 | Ubuntu x64 | Win32 | MacOS 10.6 | SunOS 5.10 | MIPS | iOS |
|---|---|---|---|---|---|---|---|
| char | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| short | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| int | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| long | 4 | 8 | 4 | 8 | 4 | 4 | 4 |
| long int | 4 | 8 | 4 | 8 | 4 | 4 | 4 |
| long long | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| float | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| double | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| long double | 12 | 16 | 8 | 16 | 16 | 8 | 8 |
| pointer | 4 | 8 | 4 | 8 | 4 | 4 | 4 |
Wednesday, October 13, 2010
Notes of differences between x86 and x64 on programming
Notes: For reference only, actual situation should be affected by CPU type, kernel, compiler, etc.
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