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From: ok@goanna.cs.rmit.edu.au (Richard A. O'Keefe)
Subject: Re: Multiple reasons for failure of Ariane 5 (was: Re: Ariane 5 - not
 an exception?)
Date: 1996/08/23
Message-ID: <4vjv1e$8c6@goanna.cs.rmit.edu.au>#1/1
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references: <Dv45EJ.8r@fsa.bris.ac.uk> <kdk9vs9cln.fsf@henning.camb>
 	<4ta0iu$kks@goanna.cs.rmit.edu.au> <4u538f$9q6@hacgate2.hac.com>
 	<4u6723$kp2@piglet.cc.uic.edu> <dewar.839392100@schonberg>
 	<Dvspqs.3ry@thomsoft.com> <dewar.839592590@schonberg>
 	<4uibvh$1p76@news-s01.ny.us.ibm.net>
 	<Pine.GSO.3.92.960815090506.20435B-100000@nunic.nu.edu>
 	<4vgkt1$s2v@goanna.cs.rmit.edu.au> <JSA.96Aug22214907@alexandria>
 <4vjea6$gj7@goanna.cs.rmit.edu.au>
organization: Comp Sci, RMIT, Melbourne, Australia
newsgroups: comp.software-eng,comp.lang.ada,comp.lang.pl1
nntp-posting-user: ok
Date: 1996-08-23T00:00:00+00:00
List-Id: <comp.lang.ada>


rav@goanna.cs.rmit.edu.au (++           robin) writes:

>---It doesn't make me look silly because I didn't ask
>the question.  I was pointing out the problems people
>have in writing codes in that language.  Do you have
>a problem with that?

But people do NOT have a problem with using the square root in Ada.

	with Ada.Numerics.Elementary_Functions;
	use  Ada.Numerics.Elementary_Functions;

	... X := Sqrt(Y);			-- Ada

This is admittedly more verbose than

	#include <math.h>

	... X = sqrt(Y);			/* C */

which is again more verbose than

	... X := Sqrt(Y);			(* Pascal *)

but it's a price that need be paid but once at the top of a file.
In the last year I have frequently used Sqrt in Ada code and found it
to be no trouble at all.  At least with Gnat I don't have to worry
about that "-lm" nonsense you get in C.

>>I have a simple question.  I am using a VAX ada compiler.  I would like
                                          *******

There is the problem.  The questioner was using a compiler for Ada 83,
and was *not* looking in the right manuals, because DEC Ada provides
access to at least the core VMS libraries, which includes the MATH$
library.

-- 
Australian citizen since 14 August 1996.  *Now* I can vote the xxxs out!
Richard A. O'Keefe; http://www.cs.rmit.edu.au/~ok; RMIT Comp.Sci.