Re: [Gretl-devel] matrix transposition/multiplication operator precedence
On Fri, 1 Jul 2016, Sven Schreiber wrote:
Hi,
not sure if this is a bug:
<hansl>
matrix a = zeros(3,1)
matrix b = ones(2,3)
matrix hu = a' * b'
hu = a'(b')
hu = a'b' # fails
</hansl>
Apparently gretl interprets the last line as "(a'b)'" which kind of
implies
that the implicit multiplication with the transpose sign has higher
precedence than the actual transposition of b.
"Kind of". But couldn't this be interpreted as a case of simple
left-to-right evaluation in the absence of another deciding
criterion?
Off the cuff, I'd be inclined to say that it's a bug only if one
reckons that the correct behavior is to reject the expression as
ambiguous.
Allin