# Documentation

class (C a, C a) => C a whereSource

The two classes `C`

and `Algebra.ToRational.C`

exist to allow convenient conversions,
primarily between the built-in types.
They should satisfy

fromInteger . toInteger === id toRational . toInteger === toRational

Conversions must be lossless, that is, they do not round in any way. For rounding see Algebra.RealRing.

I think that the RealIntegral superclass is too restrictive. Non-negative numbers are not a ring, but can be easily converted to Integers.

fromIntegral :: (C a, C b) => a -> bSource

ringPower :: (C a, C b) => b -> a -> aSource

A prefix function of '(Algebra.Ring.^)' with a parameter order that fits the needs of partial application and function composition. It has generalised exponent.

See: Argument order of `expNat`

on
http://www.haskell.org/pipermail/haskell-cafe/2006-September/018022.html

fieldPower :: (C a, C b) => b -> a -> aSource

A prefix function of '(Algebra.Field.^-)'. It has a generalised exponent.