From b443145ff3415fcaee903a7d95fa7212df5a77db Mon Sep 17 00:00:00 2001 From: Roberto Ierusalimschy Date: Thu, 12 Sep 2024 11:08:11 -0300 Subject: Details Fixed comments in sort partition. --- ltablib.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'ltablib.c') diff --git a/ltablib.c b/ltablib.c index 4db3768a..baa7111e 100644 --- a/ltablib.c +++ b/ltablib.c @@ -298,14 +298,14 @@ static IdxT partition (lua_State *L, IdxT lo, IdxT up) { for (;;) { /* next loop: repeat ++i while a[i] < P */ while ((void)geti(L, 1, ++i), sort_comp(L, -1, -2)) { - if (l_unlikely(i == up - 1)) /* a[i] < P but a[up - 1] == P ?? */ + if (l_unlikely(i == up - 1)) /* a[up - 1] < P == a[up - 1] */ luaL_error(L, "invalid order function for sorting"); lua_pop(L, 1); /* remove a[i] */ } - /* after the loop, a[i] >= P and a[lo .. i - 1] < P */ + /* after the loop, a[i] >= P and a[lo .. i - 1] < P (a) */ /* next loop: repeat --j while P < a[j] */ while ((void)geti(L, 1, --j), sort_comp(L, -3, -1)) { - if (l_unlikely(j < i)) /* j < i but a[j] > P ?? */ + if (l_unlikely(j < i)) /* j <= i - 1 and a[j] > P, contradicts (a) */ luaL_error(L, "invalid order function for sorting"); lua_pop(L, 1); /* remove a[j] */ } -- cgit v1.2.3-55-g6feb