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| author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2019-05-13 16:17:21 -0300 |
|---|---|---|
| committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2019-05-13 16:17:21 -0300 |
| commit | 279c3a6961c60252f0368fdea889caf977f85fe0 (patch) | |
| tree | 1614c0b508f34657f81d155dec6dffd92e671479 /luaconf.h | |
| parent | 49c42f3615bd876657bf697e3bf040ce796ae238 (diff) | |
| download | lua-279c3a6961c60252f0368fdea889caf977f85fe0.tar.gz lua-279c3a6961c60252f0368fdea889caf977f85fe0.tar.bz2 lua-279c3a6961c60252f0368fdea889caf977f85fe0.zip | |
A few changes in tests about number of bits in integers
- The preprocessor must work with at least 'long', and therefore must
do shifts of up to 31 bits correctly.
- Whenever possible, use unsigned types in shifts.
Diffstat (limited to 'luaconf.h')
| -rw-r--r-- | luaconf.h | 3 |
1 files changed, 1 insertions, 2 deletions
| @@ -87,9 +87,8 @@ | |||
| 87 | 87 | ||
| 88 | /* | 88 | /* |
| 89 | @@ LUAI_IS32INT is true iff 'int' has (at least) 32 bits. | 89 | @@ LUAI_IS32INT is true iff 'int' has (at least) 32 bits. |
| 90 | ** (the use of two shifts avoids undefined shifts) | ||
| 91 | */ | 90 | */ |
| 92 | #define LUAI_IS32INT (((UINT_MAX >> 15) >> 15) >= 3) | 91 | #define LUAI_IS32INT ((UINT_MAX >> 30) >= 3) |
| 93 | 92 | ||
| 94 | /* }================================================================== */ | 93 | /* }================================================================== */ |
| 95 | 94 | ||