dec2bin(bitand(uintNum(3), 3)) fails

Jose Gonzalez jose.andres.gonzalez at gmail.com
Sun Jun 7 22:04:19 CDT 2009 

Bug report for Octave 3.0.1 configured for i486-pc-linux-gnu

Description:
-----------
dec2bin(bitand(uintNum(x), 3)) fails.  By fails, I mean it returns the wrong
value.  In the case of unit8, uint16 and uint32, '100' is returned instead
of '11' when x =3*(whole number larger than 0) and results in '0' otherwise.
This does not happen for dec2bin(bitand(some_number, 3)) which returns the
correct value.

Repeat-By:
---------

  *
octave:48> dec2bin(bitand(uint16(0),3))
ans = 0
octave:49> dec2bin(bitand(uint16(1),3))
ans = 0
octave:50> dec2bin(bitand(uint16(2),3))
ans = 0
octave:51> dec2bin(bitand(uint16(3),3))
ans = 100
octave:52> dec2bin(bitand(uint8(3),3))
ans = 100
octave:53> dec2bin(bitand(uint8(0),3))
ans = 0
octave:54> dec2bin(bitand(uint8(1),3))
ans = 0
octave:55> dec2bin(bitand(uint8(2),3))
ans = 0
octave:56> dec2bin(bitand(uint8(3),3))
ans = 100
octave:57> dec2bin(bitand(uint32(3),3))
ans = 100
octave:58> dec2bin(bitand(uint32(2),3))
ans = 0
octave:59> dec2bin(bitand(uint32(1),3))
ans = 0
octave:60> dec2bin(bitand(uint32(0),3))
ans = 0


Fix:
---

  * If possible, replace this item with a description of how to
    fix the problem (if you don't have a fix for the problem, don't
    include this section, but please do submit your report anyway).



Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Linux RYAR-laptop 2.6.28-11-generic #42-Ubuntu SMP Fri Apr
17 01:57:59 UTC 2009 i686 GNU/Linux
configure opts:   '--host=i486-linux-gnu' '--build=i486-linux-gnu'
'--prefix=/usr' '--datadir=/usr/share' '--libdir=/usr/lib'
'--libexecdir=/usr/lib' '--infodir=/usr/share/info'
'--mandir=/usr/share/man' '--with-blas=-lblas-3gf'
'--with-lapack=-llapackgf-3' '--with-hdf5' '--with-fftw' '--enable-shared'
'--enable-rpath' '--disable-static' 'build_alias=i486-linux-gnu'
'host_alias=i486-linux-gnu' 'CC=gcc' 'CFLAGS=-g -O2'
'LDFLAGS=-Wl,-Bsymbolic-functions' 'CPPFLAGS=' 'CXX=g++' 'CXXFLAGS=-g -O2'
'F77=gfortran' 'FFLAGS=-g -O2'
Fortran compiler: gfortran
FFLAGS:           -O2 -g
F2C:              @F2C@
F2CFLAGS:         @F2CFLAGS@
FLIBS:            -L/usr/lib/gcc/i486-linux-gnu/4.3.3
-L/usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/i486-linux-gnu/4.3.3/../../.. -lhdf5 -lz
-lgfortranbegin -lgfortran -lm
CPPFLAGS:
INCFLAGS:         -I. -I. -I./liboctave -I./src -I./libcruft/misc
C compiler:       gcc, version 4.3.3 (Ubuntu 4.3.3-5ubuntu4)
CFLAGS:           -O2 -g
CPICFLAG:         -fPIC
C++ compiler:     g++, version 4.3.3
CXXFLAGS:         -O2 -g
CXXPICFLAG:       -fPIC
LD_CXX:           g++
LDFLAGS:
LIBFLAGS:         -L.
RLD_FLAG:         -Wl,-rpath -Wl,/usr/lib/octave-3.0.1
BLAS_LIBS:        -llapackgf-3 -lblas-3gf
FFTW_LIBS:        -lfftw3
LIBS:             -lreadline  -lncurses -ldl -lhdf5 -lz -lm
LEXLIB:
LIBGLOB:
SED:              /bin/sed
DEFS:

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User-preferences (please do not edit this section):
--------------------------------------------------

  EDITOR = emacs
  EXEC_PATH =
/usr/lib/octave/3.0.1/site/exec/i486-pc-linux-gnu:/usr/lib/octave/api-v32/site/exec/i486-pc-linux-gnu:/usr/lib/octave/site/exec/i486-pc-linux-gnu:/usr/lib/octave/3.0.1/exec/i486-pc-linux-gnu:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
  IMAGE_PATH = .:/usr/share/octave/3.0.1/imagelib
  PAGER = pager
  PS1 = \s:\#>
  PS2 = >
  PS4 = +
  beep_on_error = 0
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  crash_dumps_octave_core = 1
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  fixed_point_format = 0
  gnuplot_binary = gnuplot
  gnuplot_command_end =

  gnuplot_command_plot = pl
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  gnuplot_command_splot = sp
  gnuplot_command_title = t
  gnuplot_command_using = u
  gnuplot_command_with = w
  history_file = /home/jgonzalez/.octave_hist
  history_size = 1024
  ignore_function_time_stamp = system
  info_file = /usr/share/info/octave3.0.info
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