Re: [Plplot-devel] PLplot Fortran bindings

[Arjen M. <Arj...@de...>]

Hi Alan, Wadud,

> -----Original Message-----
> From: Alan W. Irwin [mailto:ir...@be...]
> Sent: Wednesday, April 27, 2016 11:22 PM
> To: Wadud Miah
> Cc: Arjen Markus; plp...@li...
> Subject: RE: [Plplot-devel] PLplot Fortran bindings
>
> To Wadud and Arjen:
>
> @Arjen:
> Since you have been unable to answer my quick question in a timely manner
> concerning adopting selected_int_kind(9) rather than 4 for private_plint,
> private_plbool, and private_plunicode, I have decided to just go ahead with that
> change (commit 3442bac).
>
Yesterday was a national holiday here, so I paid little attention to my inbox :). However, considering the portability of these two types, why don't we use C_INT32_T from ISO_C_BINDING? This maps to C's int32_t type (for the companion C compiler to be precise). Essentially the same thing, except if the platform does not have 32 bits integers, I'd say, but it conveys the one-to-one relation between the Fortran and C side.

This does not rely on the Fortran 2008 standard, only on the Fortran 2003 standard and we require that for the new binding anyway.

>
> @Arjen and Wadud: I suspect the kind=4 logic we were using before only worked
> by a historical accident that that particular kind value corresponded for most Fortran
> compilers to the 4-byte integers we desired for these private types.  So I am much
> more comfortable with the present selected_int_kind(9) fix for that situation, but that
> fix does need testing on more than just my (Debian jessie) platform.
>
Quite possibly, something like unit 5 in Fortran being attached to the keyboard and unit 6 to the console. Nothing that is 100% guaranteerd, but so likely that you begin to think it is guaranteed.

>
> @Arjen: Could you follow up with similar test results for the latest git master tip for
> both your Cygwin and MinGW-w64/MSYS2 platforms?
> That wiki table documents your previous (good) Cygwin Fortran result.
> Previously you also sent me your good MinGW-w64/MSYS2 platform results for
> Fortran, but I was holding off on posting that result to our wiki because that report
> also revealed a MinGW-w64/MSYS2 installation update issue that requires you to
> reinstall the MinGW-w64/MSYS2 platform to get access to the much more
> convenient/reliable updating available for the latest version of that platform.
>
Will do. I should have time today to do that. That testing should cover the other issue (the temporary files) as well.

Regards,

Arjen

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