Re: [Vala] GMP vapi

[Jeremiah Shaulov <thecoolfoobar gmail com>]

On Thu, 2011-08-04 at 11:22 +0200, Toineo wrote:
> Hi !
>
> I'm very interested in your implementation of GMP in vala.
> Do you accept to share it ?
>
> You should maybe share it on 
> http://live.gnome.org/Vala/ExternalBindings ,
> as L. Bruno suggested ; it would give it more visibility...
>
> Best regards


Hi,

I posted gmp.vapi to live.gnome.org:
http://live.gnome.org/Vala/ExternalBindings?action=AttachFile&do=view&target=gmp.vapi

Everybody is welcome to download.

I found no way to make this binding standalone, and i wrote about this
in the list. So additional C header file is required to compile. Create
file named "gmp-vapi.h" with the following content (this is also noted
in gmp.vapi in top comment):

#include <stdio.h>
#include <string.h>
#include <gmp.h>
#
#ifndef vala_mpz_init
#
#       define vala_mpz_init(self, bitcnt) (bitcnt==0 ? \
(void)mpz_init(self) : (void)mpz_init2(self, bitcnt))
#       define vala_mpf_init(self, bitcnt) (bitcnt==0 ? \
(void)mpf_init(self) : (void)mpf_init2(self, bitcnt))
#
#       define vala_gmp_randstate_copy(from, to) \
gmp_randinit_set(to, from)
#       define vala_mpz_copy(from, to) mpz_init_set(to, from)
#       define vala_mpf_copy(from, to) mpf_init_set(to, from)
#
#endif

Example program "test.vala":

using GLib;
using Gmp;

public class Test : Object
{       public static int main (string[] args)
        {       var a = Float.string("123.456");
                var b = Float.double(987.654);

                a.mul(a, b); // a = a * b

                Gmp.printf("Result: %Ff\n", a);

                return 0;
    }
}

Compile:

valac test2.vala --pkg gmp --vapidir="." -X -I. -X -lgmp

--vapidir="." is needed if gmp.vapi is located in current directory,
instead of default location (/usr/share/vala/vapi/).

-X -I. is needed if gmp-vapi.h is located in current directory, instead
of default location (/usr/include/).

-X -lgmp is always needed since GMP doesn't support pkg-config.

Please let me know if you have troubles with this, or if you find bugs.

Best regards