Unidentified subject!

[Sven Khatri]

To: address@hidden
Cc: khatri
Subject: bug_report: norm.m in Octave 2.0.13.90

Bug report for Octave 2.0.13.90 configured for i386-redhat-linux-gnu

Description:
-----------

  * There is an error in the code of norm.m for the matrix inf and 1 norms
    

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

  * M=eye(2)+i*eye(2);norm(M,'inf')    
      returns 2 where the correct answer is sqrt(2) it makes the same error for 
the 1-norm. 
    

Fix:
---

  * replace:
        abs (real (xp)) + abs (imag (xp))
    in the matrix case computation by:
        abs(xp)



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

uname output:     Linux saturn.vocalpoint.com 2.0.36 #1 Mon Mar 1 09:30:01 PST 
1999 i686 unknown
configure opts:   --prefix=/usr --with-g77 --enable-dl --enable-shared 
--enable-rpath --enable-lite-kernel --enable-picky-flags i386-redhat-linux
Fortran compiler: g77
FFLAGS:           -O
F2C:              
F2CFLAGS:         
FLIBS:            -L/usr/lib/gcc-lib/i386-redhat-linux/egcs-2.90.29 
-L/usr/i386-redhat-linux/lib -lf2c -lm
CPPFLAGS:         
INCFLAGS:         -I/usr/include -I/usr/include/octave-2.0.13.90
C compiler:       gcc, version 2.7.2.3
CFLAGS:           -DHAVE_CONFIG_H -mieee-fp -O2 -m486 -fno-strength-reduce
CPICFLAG:         -fPIC
C++ compiler:     c++, version 2.90.29 980515 (egcs-1.0.3 release)
CXXFLAGS:         -DHAVE_CONFIG_H -mieee-fp -fno-rtti -fno-exceptions 
-fno-implicit-templates -O2 -m486 -fno-strength-reduce
CXXPICFLAG:       -fPIC
LDFLAGS:          -g
LIBFLAGS:         -L/usr/lib/octave-2.0.13.90
RLD_FLAG:         -Xlinker -rpath -Xlinker /usr/lib/octave-2.0.13.90
TERMLIBS:         -lncurses
LIBS:             
LEXLIB:           
LIBPLPLOT:        
LIBDLFCN:         
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  -DHAVE_POSIX_SIGNALS=1 -DHAVE_GETRUSAGE=1 -DHAVE_TIMES=1

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