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authorRoberto Ierusalimschy <roberto@inf.puc-rio.br>2019-05-13 16:17:21 -0300
committerRoberto Ierusalimschy <roberto@inf.puc-rio.br>2019-05-13 16:17:21 -0300
commit279c3a6961c60252f0368fdea889caf977f85fe0 (patch)
tree1614c0b508f34657f81d155dec6dffd92e671479 /luaconf.h
parent49c42f3615bd876657bf697e3bf040ce796ae238 (diff)
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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.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/luaconf.h b/luaconf.h
index 4647ba17..e6271b80 100644
--- a/luaconf.h
+++ b/luaconf.h
@@ -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