[fpc-pascal] Integer = Extended?

[Daniël Mantione]

Op Thu, 17 May 2007, schreef Wolfram Kl=E4ger:

> What?s wrong with the following declarations:
> =

> function Any(A1 : Extended; A2 : Extended) : AnyType; overload;
> =

> function Any(A1 : Integer; A2 : Integer) : AnyType; overload;
> =

> FPC 2.04 on Win32 says, both functions have same parameter list. Conseque=
ntly, there is no error message, when I?m feeding the extended version with=
 Integers.
> =

> Say, such autocast is a convenience feature in many cases. For my applica=
tion it?s weird. What is the appropriate workaround? Is there some homemade=
 type checking like
> =

> if A1 is Integer then SureItsInteger else SureItsExtended?

Use exact matching parameters. FPC will try to do as little type =

conversions as possible, so if you feed your procedure with integers it =

won't call the extended version. If you want to call the extended version, =

convert the parameters to extended first.

It is however good practise to make both variants have the same semantics.

Dani=EBl