view util/bit53.lua @ 13559:eedae7d47784 0.12

MUC: optimizations for broadcast of visitor presence (thanks Jitsi team) This avoids doing performing unnecessary work in the case of visitors joining a MUC, no functionality changes are intended.
author Matthew Wild <mwild1@gmail.com>
date Fri, 15 Nov 2024 14:36:41 +0000
parents af02b033bd7f
children 9912baa541c0
line wrap: on
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-- Only the operators needed by net.websocket.frames are provided at this point
return {
	band   = function (a, b, ...)
		local ret = a & b;
		if ... then
			for i = 1, select("#", ...) do
				ret = ret & (select(i, ...));
			end
		end
		return ret;
	end;
	bor    = function (a, b, ...)
		local ret = a | b;
		if ... then
			for i = 1, select("#", ...) do
				ret = ret | (select(i, ...));
			end
		end
		return ret;
	end;
	bxor   = function (a, b, ...)
		local ret = a ~ b;
		if ... then
			for i = 1, select("#", ...) do
				ret = ret ~ (select(i, ...));
			end
		end
		return ret;
	end;
	rshift = function (a, n) return a >> n end;
	lshift = function (a, n) return a << n end;
};