úÎ! ‘ +     (c) Masahiro Sakai 2013 BSD-stylemasahiro.sakai@gmail.com provisional9non-portable (FlexibleInstances, DeriveDataTypeable, CPP)Safe2=? Ç signSigns of real numbers.signnegativesignzerosignpositivesignUnary negation.signAbsolute value.signMultiplication.signReciprocal fraction.signFractional division. signExponentiation s^x.Note that we define    0 =  assuming 0^0 = 1. signSign of a number. signMnemonic symbol of a number.This function returns "-", "0", "+" respectively for , , .        !sign-0.4.4-HBkZV3gWv1rC3KmEe1o91f Data.SignSignNegZeroPosnegateabsmultrecipdivpowsignOfsymbol$fFractionalSet$fNumSet $fFiniteSign$fUniverseSign$fHashableSign $fNFDataSign$fEqSign $fOrdSign $fShowSign $fReadSign $fEnumSign $fBoundedSign $fDataSign