From: "Luis P. Mendes" <luislupeXXX@gmailXXX.com>
Subject: Re: Need some light on using Ada or not
Date: 20 Feb 2011 00:20:56 GMT
Date: 2011-02-20T00:20:56+00:00 [thread overview]
Message-ID: <4d605e67$0$23753$14726298@news.sunsite.dk> (raw)
In-Reply-To: 7ibvl6tn4os3njo3p4kek9kop44nke3n7t@4ax.com
Sat, 19 Feb 2011 13:07:58 +0000, Brian Drummond escreveu:
> Ada can easily bind to C libraries, it's standard and well documented.
>
> However there already exist bindings to some graphics libraries and data
> visualisation tools - look at GTKAda and QTAda for GUI and some graphics
> bindings, and PLPlot for data visualisation. One of these may work for
> you.
>
> C++ bindings are also possible, but with some work and (currently) some
> limitations.
> A GCC recent enough to support "-f-dump-ada-spec" will auto-generate an
> Ada spec from C++ sources, which will save a lot of the work. (Adacore
> "libre" 2010 has it; the FSF GCC 4.5.0 has not. Anyone know if it made
> it into 4.5.1 or 4.6.0?)
>
> I would currently treat that binding as a starting point rather than a
> complete solution. For example, it (libre "GPL2010" from Adacore) has
> problems with templates. (Especially when your well-proven C++ template
> library still has bugs that Ada generics would have caught first time
> through the compiler!)
Would you mind giving me an example?
Please consider the following C++ code:
===== header file
$ cat aleatorio.h
#ifndef GUARD_aleatorio_h
#define GUARD_aleatorio_h
#include <unistd.h>
#include <ctime>
#include <cstdlib>
void iniciarSemente();
double gerarAleatorio(int a, int b);
int gerarAleatorioInteiro(int a, int b);
int arredondar(double res);
#endif
===== source file
$ cat aleatorio.cpp
#include <unistd.h>
#include <ctime>
#include <cstdlib>
#include "aleatorio.h"
#include <math.h>
using std::srand;
using std::rand;
void iniciarSemente() {
srand(time(NULL));
//srand(10); //gerar sempre a mesma semente para comparacoes
}
double gerarAleatorio(int a, int b) {
return (b-a) * ( (double) rand()/RAND_MAX) + a;
}
int arredondar(double res) {
return (res > 0.0) ? floor(res + 0.5) : ceil(res - 0.5);
}
int gerarAleatorioInteiro(int a, int b) {
// verificar colocação do (int), parêntesis
float res;
res = gerarAleatorio(a, b);
return arredondar(res);
}
=====
From Ada, how can I use these h and cpp files to call, for example,
gerarAleatorioInteiro(0,10)?
Luis
next prev parent reply other threads:[~2011-02-20 0:20 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-18 22:52 Need some light on using Ada or not Luis P. Mendes
2011-02-18 23:58 ` Georg Bauhaus
2011-02-19 14:25 ` Simon Wright
2011-02-19 0:20 ` Edward Fish
2011-02-20 0:13 ` Luis P. Mendes
2011-02-20 1:36 ` Marc A. Criley
2011-02-20 9:59 ` mockturtle
2011-02-20 10:37 ` Brian Drummond
2011-02-20 11:08 ` Ludovic Brenta
2011-03-01 8:10 ` Adrian Hoe
2011-03-01 8:29 ` Thomas Løcke
2011-03-04 13:34 ` Adrian Hoe
2011-02-19 8:43 ` Vadim Godunko
2011-02-19 13:07 ` Brian Drummond
2011-02-19 14:17 ` Simon Wright
2011-02-19 18:02 ` Brian Drummond
2011-02-19 18:07 ` Bill Findlay
2011-02-20 10:42 ` Brian Drummond
2011-02-19 14:36 ` Georg Bauhaus
2011-02-19 18:25 ` Brian Drummond
2011-02-20 14:34 ` Brian Drummond
2011-02-20 15:45 ` jonathan
2011-02-20 16:18 ` Brian Drummond
2011-02-20 19:49 ` Pascal Obry
2011-02-20 19:57 ` Brian Drummond
2011-02-20 20:10 ` jonathan
2011-02-20 21:15 ` Pascal Obry
2011-02-20 21:26 ` Vinzent Hoefler
2011-02-20 21:33 ` Vinzent Hoefler
2011-02-20 21:36 ` Pascal Obry
2011-02-20 21:50 ` Vinzent Hoefler
2011-02-20 22:18 ` jonathan
2011-02-20 22:47 ` Simon Wright
2011-02-21 12:52 ` Brian Drummond
2011-02-21 13:44 ` Simon Wright
2011-02-24 0:19 ` Brian Drummond
2011-02-24 7:41 ` Jacob Sparre Andersen
2011-02-22 2:15 ` Shark8
2011-02-20 16:42 ` jonathan
2011-02-20 20:02 ` Brian Drummond
2011-02-20 0:20 ` Luis P. Mendes [this message]
2011-02-20 10:50 ` Brian Drummond
2011-02-20 19:54 ` Brian Drummond
2011-02-23 22:19 ` Luis P. Mendes
2011-02-24 17:06 ` Brian Drummond
2011-02-27 17:51 ` Luis P. Mendes
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