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Removed some wrong comments

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Both 'tonumber' and 'tointeger' cannot change the out parameter when
the conversion fails.
This commit is contained in:
Roberto Ierusalimschy 2019-11-28 18:10:26 -03:00
parent 6f1c033d72
commit 508a705c1c
1 changed files with 6 additions and 8 deletions
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14
lapi.c
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@ -350,23 +350,21 @@ LUA_API size_t lua_stringtonumber (lua_State *L, const char *s) {
LUA_API lua_Number lua_tonumberx (lua_State *L, int idx, int *pisnum) { LUA_API lua_Number lua_tonumberx (lua_State *L, int idx, int *pisnum) {
lua_Number n; lua_Number n = 0;
const TValue *o = index2value(L, idx); const TValue *o = index2value(L, idx);
int isnum = tonumber(o, &n); int isnum = tonumber(o, &n);
if (!isnum) if (pisnum)
n = 0; /* call to 'tonumber' may change 'n' even if it fails */ *pisnum = isnum;
if (pisnum) *pisnum = isnum;
return n; return n;
} }
LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *pisnum) { LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *pisnum) {
lua_Integer res; lua_Integer res = 0;
const TValue *o = index2value(L, idx); const TValue *o = index2value(L, idx);
int isnum = tointeger(o, &res); int isnum = tointeger(o, &res);
if (!isnum) if (pisnum)
res = 0; /* call to 'tointeger' may change 'n' even if it fails */ *pisnum = isnum;
if (pisnum) *pisnum = isnum;
return res; return res;
} }