From cottrell@wfu.edu Thu Jul 24 11:29:23 2008
From: Allin Cottrell <cottrell@wfu.edu>
To: gretl-devel@gretlml.univpm.it
Subject: [Gretl-devel] more user-function news
Date: Thu, 24 Jul 2008 11:26:06 -0400
Message-ID: <alpine.LRH.1.10.0807241108550.26129@ricardo.ecn.wfu.edu>
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In current CVS and Windows snapshot:

* We now have the boolean "set" variable "protect_lists", for use 
with list arguments to functions.  It's off by default.

* "const-ness" is now handled correctly for arguments taking the 
form of pointers to scalars, series and matrices.  This property 
is "inherited", so you'll (correctly) get an error from this sort 
of thing:

<script>
function baz (matrix *M)
   M = mnormal(2,2) # bzzt!
end function

function foo (const matrix *M)
   baz(&M)
end function

matrix M = I(3) 
foo(&M)
</script>

Although function baz does not mark its matrix-pointer argument as 
const, the const guarantee given by function foo carries over.

Allin.

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