Numeric.VariablePrecision.Precision
	examples of usage in documentation

Numeric.VariablePrecision.Precision.Reify
	examples of usage in documentation

Numeric.VariablePrecision.Float
	improve accuracy of log (bad: log 2 :: Double)
	readsPrec ignores precedence
	proper exception types for
		division by zero
		sqrt negative
		log nonpositive
		floatRange overflow
	reconsider warning on floatRange underflow
	check accuracy of (/), recip
	check accuracy of fromRational
	check accuracy of (+), (-), (*)
	proper (a)(sin|cos|tan)(h) (bad: viaDouble)
	profile and optimise space and time
	consider rounding modes
	consider mixed-precision operations
	consider IEEE inf/nan/-0 semantics

Numeric.VariablePrecision.Complex.Aliases
	if it proves necessary for convenience

Numeric.VariablePrecision.Algorithms
	effective precision of difference

TypeLevel.NaturalNumber.ExtraNumbers
	submit upstream and remove if accepted