From: Ben Iofel <iofel...@gmail.com>
Sent: Tuesday, 24 May 2016, 16:20
Subject: Re: [Vala] Extended floating types
error: structs cannot be empty: float128_t
I assumed you were going to put the definition in a VAPI file.If you are doing
it from a program you need to use the extern keyword:
[SimpleType]
[CCode(cname="float128_t", cheader_filename="softfloat.h", has_type_id = false,
default_value = "0")]
public extern struct float128_t {}
void main() {
float128_t example = (float128_t)1.23;
}
You will find a problem converting the constant to be a float128_t.Not sure how
to handle that.
Also I haven't looked in to which library provides float128_t so the
header probably won't be correct.
Al
On Tue, May 24, 2016 at 11:16 AM Al Thomas <astav...@yahoo.co.uk> wrote:
From: ben <iofel...@gmail.com>
Sent: Tuesday, 24 May 2016, 16:01
Subject: Re: [Vala] Extended floating types
This does not work. The C code has: typedef float float128_t;
Try:
[SimpleType][CCode(has_type_id = false, default_value = "0")]public struct
float128_t {}
The SimplyType makes it be passed by value rather than by reference when usedas
an argument in a function call.I think the FloatingType, IntegerType, etc. does
casting. As there is norank 12 it just casts to the default, i.e. float.
On the subject of binding exotic types. Bindings for C decimal typeswould be
useful for financial data and transactions.
On Mon, 2016-05-23 at 21:26 -0500, Guillaume Poirier-Morency wrote:
> It's possible to declare these types if you need to use them.
>
> https://wiki.gnome.org/Projects/Vala/Manual/Attributes#FloatingType_A
> tt
> ribute
>
> [CCode (has_type_id = false)]
> [FloatingType (decimal = false, rank = 12, width = 128]
> struct float128_t {}
>
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