Convert signed IEEE 754 float to hexadecimal representation

Question

I\'m using a front-end of Lua which is unfortunately outdated, so I\'m stuck with version 5.1 here, meaning the bit32 library is out of reach (which I probably

Answer 1

The issue I faced was trying to convert from the Hex back to a Float; You can use that tonumber(x, 16) to convert it in combination with "Error - Syntactical Remorse's" response. The string.sub is only there because my Modbus driver does not swap the bytes :)

function convertFloatSwapWord(number) -- number is string of format = 0x########
     local x = 0
     x = float2hex(number)
     x = intToHex(x)
     x = string.sub(x,5,6) .. string.sub(x,3,4) .. string.sub(x,9,10) .. string.sub(x,7,8)
     x = hex2float(tonumber(x, 16))
     return x
end