A : Arithmetic, error analysis

A1:	Integer	(0 routines)
A2:	Rational	(0 routines)
A3:	Real	(7 routines)
A4:	Complex	(3 routines)
A5:	Interval	(0 routines)
A6:	Change of representation	(0 routines)
A7:	Sequences (e.g., convergence acceleration)	(1 routine)