From G.A.Hughes@ed.ac.uk Mon Jul 28 07:25:00 2008
From: Gordon Hughes <G.A.Hughes@ed.ac.uk>
To: gretl-devel@gretlml.univpm.it
Subject: [Gretl-devel] Negation operator
Date: Mon, 28 Jul 2008 12:24:51 +0100
Message-ID: <200807281124.m6SBOxFJ020203@f4n3.wfunet.wfu.edu>
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Forgive me if this has already been spotted, but I think that 
something has gone wrong with the negation operator in the latest 
CVS.  I have recompiled gretl this morning [1.7.6rc1, 28/7/08] and 
found that I had repeated problems with the syntax if !isnull(var).

After beating my head against a brick wall I have established that

	if a = b
	..
	else
	..
	endif

works fine, but

	if a != b
	..
	else
	..
	endif

generates an error message reporting that there is an "unmatched if".

Gordon


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From r.lucchetti@univpm.it Mon Jul 28 08:00:58 2008
From: Riccardo (Jack) Lucchetti <r.lucchetti@univpm.it>
To: gretl-devel@gretlml.univpm.it
Subject: Re: [Gretl-devel] Negation operator
Date: Mon, 28 Jul 2008 14:00:56 +0200
Message-ID: <alpine.DEB.1.10.0807281359430.23075@ec-4.econ.univpm.it>
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On Mon, 28 Jul 2008, Gordon Hughes wrote:

> Forgive me if this has already been spotted, but I think that something has=
=20
> gone wrong with the negation operator in the latest CVS.  I have recompiled=
=20
> gretl this morning [1.7.6rc1, 28/7/08] and found that I had repeated proble=
ms=20
> with the syntax if !isnull(var).
>
> After beating my head against a brick wall I have established that
>
> 	if a =3D b
> 	..
> 	else
> 	..
> 	endif
>
> works fine, but
>
> 	if a !=3D b
> 	..
> 	else
> 	..
> 	endif
>
> generates an error message reporting that there is an "unmatched if".

Are you sure? The following script runs fine here:

<script>
nulldata 10
a =3D 1
b =3D 2
if a !=3D b
 	printf "NOT equal!\n"
else
 	printf "Equal.\n"
endif
</script>



Riccardo (Jack) Lucchetti
Dipartimento di Economia
Universit=C3=A0 Politecnica delle Marche

r.lucchetti(a)univpm.it
http://www.econ.univpm.it/lucchetti

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