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matiaskorhonen/signed_to_float.rb

Last active July 14, 2018 09:04
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Convert signed hexadecimals from RFLink to floats
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signed_to_float.rb
# Convert signed hexadecimals from RFLink to floats
def signed_to_float(hex)
int = hex.to_i(16)
if int & 0x8000 > 0
-(int & 0x7FFF).to_f / 10
else
int.to_f / 10
end
end
signed_to_float("80DC")
# => -22.0
signed_to_float("00C0")
# => 19.2
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