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LUA_MAXUNSIGNED was only used to define 2.0^intnumbits (and that

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definition was not strictly portable), so it was removed and
replaced by a more correct and direct definition for 2.0^intnumbits
(only where it was needed)
This commit is contained in:
Roberto Ierusalimschy
2014-06-24 14:02:00 -03:00
parent 0e6229a953
commit 54ac5960a8
2 changed files with 8 additions and 9 deletions
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9
lapi.c
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@@ -1,5 +1,5 @@
/*
** $Id: lapi.c,v 2.218 2014/06/12 19:07:30 roberto Exp roberto $
** $Id: lapi.c,v 2.219 2014/06/19 18:27:20 roberto Exp roberto $
** Lua API
** See Copyright Notice in lua.h
*/
@@ -372,6 +372,11 @@ LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *pisnum) {
}
#if !defined(LUAI_FTWO2N)
/* 2.0^(numbits in an integer), computed without roundings */
#define LUAI_FTWO2N (cast_num(LUA_MININTEGER) * cast_num(-2))
#endif
LUA_API lua_Unsigned lua_tounsignedx (lua_State *L, int idx, int *pisnum) {
lua_Unsigned res = 0;
const TValue *o = index2addr(L, idx);
@@ -383,7 +388,7 @@ LUA_API lua_Unsigned lua_tounsignedx (lua_State *L, int idx, int *pisnum) {
break;
}
case LUA_TNUMFLT: { /* compute floor(n) % 2^(numbits in an integer) */
const lua_Number two2n = cast_num(LUA_MAXUNSIGNED) + cast_num(1);
const lua_Number two2n = LUAI_FTWO2N;
lua_Number n = fltvalue(o); /* get value */
int neg = 0;
n = l_floor(n); /* get its floor */