Hi Paul, "Paul A Bristow" <pbristow@hetp.u-net.com> wrote in message news:E1FvDk8-0005y8-PO@he303war.uk.vianw.net...

I am writing template math functions.

Some can take integral types (only)

Some can take real (both built-in floating-point - float, double.. AND User Defined real types)

And some can take either integral OR real.

Real : Floating-point types Integer : Integral types Arithmetic : Either Integral OR Floating-point types

Arithmetic is a bit long - other ideas?

So to write a function something like

template <class RealType> RealType students_t(ArithmeticType degrees_of_freedom, RealType t) { ... }

Using just T is not an option because there are three (at least) possibles.

What names should I use for the types?

I think they are Concepts rather than types FWIW. template <class ArithmeticType ,class RealType> RealType students_t(ArithmeticType degrees_of_freedom, RealType t) { ... } I assume you meant that above?

RealType, real_type, RealT, or RT, or ???

IntType, int_type, IntT, IT, or ???

ArithmeticType, arithmetic_type, ArithType, arith_type, AT ???

Suggestions for names please. Rationales? Prior art? Precedents? Standards?

Thanks

Sounds to me like these Concepts and their requirements need to be written and put somewhere in the Boost Docs. . I would be happy to help, but given my recent form regarding Concepts, I'm probably not the best person to ask! ;-). Anyway I think they are needed and very useful. Maybe you should start here: http://www.boost.org/libs/concept_check/reference.htm#basic-concepts Maybe you could also use type_traits as a basis for names. regards Andy Little

Some can take integral types (only)

Some can take real (both built-in floating-point - float, double.. AND User Defined real types)

And some can take either integral OR real.

Real : Floating-point types Integer : Integral types Arithmetic : Either Integral OR Floating-point types

Arithmetic is a bit long - other ideas?

How about Number? It is used in some languages (e.g. javascript) that don't have both float and int. Darren