bit manipulation functions

[Paul Brook]

On Sunday 05 December 2004 19:30, Steve Kargl wrote:
> Okay, I start working on a patch for the bit intrinsics.  One thing
> we need to decide upon is the behavior of for example IAND().  The
> g77 info file states
>
>     IAnd(I, J)
>
>     IAnd: `INTEGER' function, the exact type being the result of
>     cross-promoting the types of all the arguments.
>
> The standard states
>
> 13.7.46   IAND (I, J)
>       Description. Performs a bitwise AND.
>       Class.       Elemental function.
>       Arguments.
>       I            shall be of type integer.
>       J            shall be of type integer with the same kind type
>                    parameter as I.
>
> Do we want the standard's behavior or backwards compatibility with
> g77?

The Fortran 95 behaviour is a subset of the g77 behaviour, so we should do g77 
with appropriate warnings, like we do for the MIN and MAX intrinsics.

Paul