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hub / github.com/EmmyLua/EmmyLuaDebugger / luaO_ceillog2

Function luaO_ceillog2

third-party/lua-5.2.4/src/lobject.c:55–70  ·  view source on GitHub ↗

Source from the content-addressed store, hash-verified

53
54
55int luaO_ceillog2 (unsigned int x) {
56 static const lu_byte log_2[256] = {
57 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
58 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
59 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
60 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
61 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
62 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
63 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
64 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
65 };
66 int l = 0;
67 x--;
68 while (x >= 256) { l += 8; x >>= 8; }
69 return l + log_2[x];
70}
71
72
73lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2) {

Callers 2

countintFunction · 0.70
setnodevectorFunction · 0.70

Calls

no outgoing calls

Tested by

no test coverage detected