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use unsigneds for unary minus, too

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This commit is contained in:
Roberto Ierusalimschy
2013-07-10 14:15:12 -03:00
parent b5f5fcd782
commit 2f8c51a552
3 changed files with 8 additions and 9 deletions
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6
lvm.c
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@@ -1,5 +1,5 @@
/*
** $Id: lvm.c,v 2.174 2013/06/19 14:27:00 roberto Exp roberto $
** $Id: lvm.c,v 2.175 2013/06/20 15:02:49 roberto Exp roberto $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
@@ -334,7 +334,7 @@ lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y) {
if (y == 0)
luaG_runerror(L, "attempt to divide by zero");
else /* -1 */
return -x; /* avoid overflow with 0x80000... */
return intop(-, 0, x); /* avoid overflow with 0x80000... */
}
else {
lua_Integer d = x / y; /* perform division */
@@ -699,7 +699,7 @@ void luaV_execute (lua_State *L) {
lua_Number nb;
if (ttisinteger(rb)) {
lua_Integer ib = ivalue(rb);
setivalue(ra, -ib);
setivalue(ra, intop(-, 0, ib));
}
else if (tonumber(rb, &nb)) {
setnvalue(ra, luai_numunm(L, nb));