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--[[
lfloat2bytes
Output a float as a sequence of bytes
author Martin Peach 20120420
--]]
-- Pd class
local lfloat2bytes = pd.Class:new():register("lfloat2bytes")
local digitstr = "%g" -- defaut format string gives up to 6 significant digits
function lfloat2bytes:initialize(name, atoms)
self.inlets = 1
self.outlets = 1
if (#atoms > 0) then
--pd.post(#atoms .. " args")
--pd.post("atom 1: " .. atoms[1])
--pd.post(type(atoms[1]))
if (type(atoms[1]) ~= "number") then
self:error("lfloat2bytes: Digit count not a number")
elseif (atoms[1] > 0) and (atoms[1] <= 24) then
digitstr = string.format("%%0.%dg", atoms[1])
else
self:error("lfloat2bytes: Digit count out of range")
end
end
return true
end
-- lfloat2bytes:drip: output characters from buf as floats on [0..255]
function lfloat2bytes:drip(buf)
--pd.post(buf.. " size " .. #buf)
local i = 1, b
local len = #buf
for i = 1, len do
self:outlet(1, "float", {string.byte(buf, i)})
end
end
function lfloat2bytes:in_1(sel, atoms) -- anything
--pd.post("sel is " .. sel);
--pd.post("number of atoms is ".. #atoms)
--for i,v in ipairs(atoms) do
-- pd.post(i .. " = " .. v)
--end
local buf
if sel == "float" then -- the usual case
--buf = tostring(atoms[1])
buf = string.format(digitstr, atoms[1])
self:drip(buf)
else -- reject non-floats
self:error("lfloat2bytes: input not a float")
end
end
-- end of lfloat2bytes
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