Minor Documentation Correction to hadamard.m

[Aravindh Krishnamoorthy]

Dear,

A minor fix to documentation of hadamard function.

PROBLEM
=======
octave:1> help hadamard
[snip]
        * `det (A) <= det (HN)' for all A with `abs (A (I, J)) <= 1'.
[snip]
octave:2> H2 = hadamard(2) ;
octave:3> A = [1 -1; 1 1] ;
octave:4> det(H2)
ans = -2
octave:5> det(A)
ans =  2

FIX (Changeset)
===============
diff -r 22ae6b3411a7 scripts/ChangeLog
--- a/scripts/ChangeLog Sat Apr 11 16:26:01 2009 +0200
+++ b/scripts/ChangeLog Sun Apr 12 12:12:33 2009 +0530
@@ -1,3 +1,6 @@ 2009-04-11  David Bateman  <address@hidden
+2009-04-12  Aravindh Krishnamoorthy <address@hidden>
+       * special-matrix/hadamard.m: Fix a documentation mistake.
+
 2009-04-11  David Bateman  <address@hidden>

        * geometry/trisurf.m: New file.
diff -r 22ae6b3411a7 scripts/special-matrix/hadamard.m
--- a/scripts/special-matrix/hadamard.m Sat Apr 11 16:26:01 2009 +0200
+++ b/scripts/special-matrix/hadamard.m Sun Apr 12 12:12:33 2009 +0530
@@ -38,7 +38,7 @@
 ## @item
 ## The rows of @var{Hn} are orthogonal.
 ## @item
-## @code{det (@var{A}) <= det (@var{Hn})} for all @var{A} with
+## @code{det (@var{A}) <= abs(det (@var{Hn}))} for all @var{A} with
 ## @code{abs (@var{A} (@var{i}, @var{j})) <= 1}.
 ## @item
 ## Multiply any row or column by -1 and still have a Hadamard matrix.

NOTE
====
abs(det(Hn)) = n^(n/2), so we could reword the item as det(A) <=
n^(n/2), but this one looks better? :-)

Yours sincerely,
Aravindh Krishnamoorthy