Re: [Vala] Extended floating types



It will be good if I create a tiket in Bugzilla?

With best regards,

Vitaly

On Tue, May 24, 2016 at 1:04 PM, Daniel Espinosa <esodan gmail com> wrote:

May we need to file a bug report against this issue, in order to help
others to use Vala in different applications when needed.
El may. 23, 2016 9:27 PM, "Guillaume Poirier-Morency" <
guillaumepoiriermorency gmail com> escribió:

It's possible to declare these types if you need to use them.

https://wiki.gnome.org/Projects/Vala/Manual/Attributes#FloatingType_Att
ribute

    [CCode (has_type_id = false)]
    [FloatingType (decimal = false, rank = 12, width = 128]
    struct float128_t {}

Like Daniel said, Vala primitive types are mapped to GLib's type with
the GType system, so it's not really the language's fault if there is
no support for 128 bit floating points. It's not a common use case
either way.

With 'has_type_id = false', the compiler knows that there's no type
information to retreive.

Rank 12 does not really exist, but that would be the appropriate value
since 10 and 11 are for signed and unsigned 64 bit types.

It might be handy to have a VAPI for that in 'vala-extra-vapis'.

Cheers and best luck,

Le lundi 23 mai 2016 à 09:59 +0300, Vitaly V. Ch a écrit :
Ok, Thanks.

It clarifies the situation.

With best regards,

Vitaly Chernooky

On Mon, May 23, 2016 at 4:51 AM, Daniel Espinosa <esodan gmail com>
wrote:

May you should be able to create your own basic type.

May should be a guide to do so.

GLib should have this types too, before you are able to create your
basic
types. This means you should define a GType for a basic type, in
this case
your long double.

May we can create a library to define this math basic types, to be
used in
other libraries. This is not a GLib interest, I think, because is
not a
primary Math library.

I was working a little in that, but may you should ask to gtk-list
for
help on defining this new types.

In other ideas, is required to use that types or is possible to use
some
structs holding your information in a way to be used in other
methods, that
may take that structs an do calculations using that types
internally,
written in C with Vala bindings [1], then return again that
structs.

[] See git.gnome.org/browse/gxml it uses simple C methods and Vala
bindings to be used in Vala code for xlibxml
El may. 22, 2016 3:23 PM, "Vitaly V. Ch" <vitaly v ch gmail com>
escribió:

Hi All!

Some time ago Vala has pulled my attention as a way to solve some
kind of
math problems. But some time later I realized that this cozy and
beautiful
staff does not have extended floating datatypes such as long double
or
float128_t. This fact disappointed me and I'm interested in some
comments.

With best regards,

Vitaly Chernooky
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Guillaume Poirier-Morency <guillaumepoiriermorency gmail com>

Étudiant au baccalauréat en Informatique à l'Université de Montréal
Développeur d'application web

Mon blog: https://arteymix.github.io/
Mon projet de coopérative: https://pittoresque.github.io/
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