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Roberto Ierusalimschy
2014-02-26 09:38:18 -03:00
parent fed236ca7f
commit 5c9cb5f0b1
1 changed files with 6 additions and 2 deletions
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8
lbitlib.c
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@@ -1,5 +1,5 @@
/* /*
** $Id: lbitlib.c,v 1.21 2013/07/09 17:49:50 roberto Exp roberto $ ** $Id: lbitlib.c,v 1.22 2013/07/09 18:31:01 roberto Exp roberto $
** Standard library for bitwise operations ** Standard library for bitwise operations
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@@ -19,7 +19,11 @@
#endif #endif
/*
** a lua_Unsigned with its first LUA_NBITS bits equal to 1. (Shift must
** be made in two parts to avoid problems when LUA_NBITS is equal to the
** number of bits in a lua_Unsigned.)
*/
#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1)) #define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1))