why creating a ffi.ctype "double [1]" is slow?
- From: Ruoshan Huang <ruoshan.huang@xxxxxxxxx>
- To: LuaJIT <luajit@xxxxxxxxxxxxx>
- Date: Tue, 22 Apr 2014 15:46:10 +0800
hi there,
I have this performance issue about packing a double into raw string and
unpacking in it.
here is the gist link of the code: https://gist.github.com/ruoshan/11168592
why creating a ffi ctype `double [1]`, copying the raw string into it and
convert the `double` to number is slower.
(note: the `double_fast` function is taken from lua-MessagePack.)
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