ref: 5a71c1d2face6d917e5be7987a6942a5d32ffff2
parent: b9457814e7140bcb32b39d50bc5f77a499335202
author: kvik <kvik@a-b.xyz>
date: Sat Feb 6 17:55:14 EST 2021
math: log2 is also missing from Plan 9 libc
--- a/lmathlib.c
+++ b/lmathlib.c
@@ -173,7 +173,7 @@
res = l_mathop(log)(x);
else {lua_Number base = luaL_checknumber(L, 2);
-#if !defined(LUA_USE_C89)
+#if !defined(LUA_USE_C89) && !defined(LUA_USE_PLAN9)
if (base == l_mathop(2.0))
res = l_mathop(log2)(x); else
#endif