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From: Preben Randhol <randhol+abuse@pvv.org>
Newsgroups: comp.lang.ada
Subject: Re: What is faster Ada or C?
Date: Fri, 7 Dec 2001 17:02:38 +0000 (UTC)
Organization: Norwegian university of science and technology
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On Fri, 7 Dec 2001 16:45:36 +0000 (UTC), Georg Bauhaus wrote:
> Jacob Sparre Andersen <sparre@nbi.dk> wrote:
>  
>: * Why are the two programs below not equivalent?
>: * How can I get the Ada program to run as fast as the C++
>: program?
>  
>: with Ada.Numerics.Generic_Elementary_Functions;
>: #include <math.h>
> 
> do the two sqrts in effect refer to the same routines?

No. This is the problem.

>:   Ada.Text_IO.Put_Line ("X = " & Scalar'Image (X));
>  
>:   cout << x << endl;
> 
> have you tried with redirection to a null device,
> or with no output? (terminal I/O might really slow thing
> down.)

I tried this too. It reduces the executiuon time with about 6% for C++
and 14% for the Ada program.

Preben
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