Numeric.SGD.LogSigned

Module provides data type for signed log-domain calculations.

Documentation

data LogSigned

Signed real value in the logarithmic domain.

Constructors

LogSigned

Fields

pos :: !LogFloat

Positive component

neg :: !LogFloat

Negative component

Instances

Eq LogSigned

Num LogSigned

Ord LogSigned

Show LogSigned

NFData LogSigned

logSigned :: Double -> LogSigned

Smart LogSigned constructor.

fromPos :: LogFloat -> LogSigned

Make LogSigned from a positive, log-domain number.

fromNeg :: LogFloat -> LogSigned

Make LogSigned from a negative, log-domain number.

toNorm :: LogSigned -> Double

Shift LogSigned to a normal domain.

toLogFloat :: LogSigned -> Either LogFloat LogFloat

Change the LogSigned to either negative Left LogFloat or positive Right LogFloat.