From bug-octave-request at bevo dot che dot wisc dot edu Tue Nov 18 12:18:18 2003
Subject: possible bug in rank.m
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Gabriele Pannocchia <g dot pannocchia at ing dot unipi dot it>
Cc: bug-octave at bevo dot che dot wisc dot edu
Date: Tue, 18 Nov 2003 12:18:04 -0600

On 17-Nov-2003, Gabriele Pannocchia <g dot pannocchia at ing dot unipi dot it> wrote:

| I just downloaded and installed octave-2.1.51 (i686-pc-linux-gnu). 
| I ran into the following error, which may or may not be a bug.
| 
| BUG DESCRIPTION:
| octave:1> rank(eye(1))
| error: octave_base_value::array_value(): wrong type argument `bool'
| error: evaluating assignment expression near line 49, column 10
| error: called from `rank' in file `/usr/share/octave/2.1.51/m/linear-algebra/rank.m'
| 
| I seem to have the same error if I pass any vector:
| octave:2> rank([1,2])
| error: octave_base_value::array_value(): wrong type argument `bool'
| error: evaluating assignment expression near line 49, column 10
| error: called from `rank' in file `/usr/share/octave/2.1.51/m/linear-algebra/rank.m'
| 
| If instead, I supply a matrix the result is correct:
| octave:2> a=[1,2;1,1];rank(a)
| ans = 2
| 
| 
| MACHINE & INSTALLATION DETAILS:
| uname -m = i686
| uname -r = 2.4.18-4GB
| uname -s = Linux
| ./configure --prefix="/usr" --enable-shared --enable-lite-kernel --enable-rpath

I would not recommend using --prefix=/usr for locally installed
software.

Please try the following patch.

jwe

src/ChangeLog:

2003-11-18  John W. Eaton  <jwe at bevo dot che dot wisc dot edu>

	* ov-bool.h (octave_bool::array_value,
	octave_bool::complex_array_value): New functions.


Index: src/ov-bool.h
===================================================================
RCS file: /usr/local/cvsroot/octave/src/ov-bool.h,v
retrieving revision 1.21
diff -u -r1.21 ov-bool.h
--- src/ov-bool.h	14 Nov 2003 19:49:56 -0000	1.21
+++ src/ov-bool.h	18 Nov 2003 18:15:31 -0000
 at @ -92,11 +92,17 @@
   Matrix matrix_value (bool = false) const
     { return Matrix (1, 1, scalar); }
 
+  NDArray array_value (bool = false) const
+    { return NDArray (dim_vector (1, 1), scalar); }
+
   Complex complex_value (bool = false) const { return scalar; }
 
   ComplexMatrix complex_matrix_value (bool = false) const
     { return  ComplexMatrix (1, 1, Complex (scalar)); }
 
+  ComplexNDArray complex_array_value (bool = false) const
+    { return ComplexNDArray (dim_vector (1, 1), Complex (scalar)); }
+
   bool bool_value (void) const { return scalar; }
 
   boolMatrix bool_matrix_value (void) const



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