bitshift of integer type with K=0 does not behave as expected + patch

Thu Mar 12 10:30:19 CDT 2009

Re-sending with a patch to fix it this time.

Seb.

Bug report for Octave 3.0.3 configured for i686-pc-linux-gnu

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

 bitshift of uint32 value with K=0 does not behave as expected

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

debug> bitshift(372607261,0,10)
ans =  285
debug> bitshift(uint32(372607261),0,10)
ans = 372607261

How to fix it
---------------

--- liboctave/oct-inttypes.h	2009-03-12 14:01:54.000000000 +0100
*************** bitshift (const octave_int<T>& a, int n,
*** 556,562 ****
    else if (n < 0)
      return (a >> -n) & mask;
    else
!     return a;
  }

  #define OCTAVE_INT_CMP_OP(OP) \
--- 556,562 ----
    else if (n < 0)
      return (a >> -n) & mask;
    else
!     return a & mask;
  }

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

uname output:     Linux sebuntu 2.6.24-23-generic #1 SMP Mon Jan 26
00:13:11 UTC 2009 i686 GNU/Linux
configure opts:
Fortran compiler: gfortran
FFLAGS:           -O -mieee-fp
F2C:              @F2C@
F2CFLAGS:         @F2CFLAGS@
FLIBS:            -L/usr/lib/gcc/i486-linux-gnu/4.2.4
-L/usr/lib/gcc/i486-linux-gnu/4.2.4/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/i486-linux-gnu/4.2.4/../../.. -lz
-lgfortranbegin -lgfortran -lm
CPPFLAGS:
INCFLAGS:         -I. -I. -I./liboctave -I./src -I./libcruft/misc
C compiler:       gcc, version 4.2.4 (Ubuntu 4.2.4-1ubuntu3)
CFLAGS:           -g -O2
CPICFLAG:         -fPIC
C++ compiler:     g++, version 4.2.4
CXXFLAGS:         -g -O2
CXXPICFLAG:       -fPIC
LD_CXX:           g++
LDFLAGS:
LIBFLAGS:         -L.
RLD_FLAG:         -Wl,-rpath -Wl,/usr/local/lib/octave-3.0.3
BLAS_LIBS:
FFTW_LIBS:
LIBS:             -lreadline  -lncurses -ldl -lz -lm
LEXLIB:
LIBGLOB:
SED:              /bin/sed
DEFS:

 -DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION=""
 -DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DOCTAVE_SOURCE=1
 -D_GNU_SOURCE=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1
 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1
 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DSEPCHAR=':'
 -DSEPCHAR_STR=":" -D__NO_MATH_INLINES=1 -DCXX_NEW_FRIEND_TEMPLATE_DECL=1
 -DCXX_ISO_COMPLIANT_LIBRARY=1 -DCXX_ABI=gnu_v3 -DHAVE_LIBM=1
 -DHAVE_REGEXEC=1 -DHAVE_REGEX=1 -DHAVE_REGEXEC=1 -DHAVE_ZLIB_H=1
 -DHAVE_ZLIB=1 -DHAVE_IEEE754_DATA_FORMAT=1 -DF77_FUNC(name,NAME)=name ## _
 -DF77_FUNC_(name,NAME)=name ## _ -DHAVE_GETHOSTNAME=1 -DHAVE_GETPWNAM=1
 -DHAVE_DEV_T=1 -DHAVE_INO_T=1 -DHAVE_NLINK_T=1 -DHAVE_NLINK_T=1
 -DHAVE_LONG_LONG_INT=1 -DHAVE_UNSIGNED_LONG_LONG_INT=1
 -DHAVE_SIGSET_T=1 -DHAVE_SIG_ATOMIC_T=1 -DSIZEOF_SHORT=2
 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DSIZEOF_LONG_LONG=8 -DHAVE_ALLOCA_H=1
 -DHAVE_ALLOCA=1 -DNPOS=std::string::npos -DHAVE_PLACEMENT_DELETE=1
 -DHAVE_DYNAMIC_AUTO_ARRAYS=1 -DSTDC_HEADERS=1 -DHAVE_DIRENT_H=1
 -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1 -DHAVE_ASSERT_H=1
 -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1 -DHAVE_FLOAT_H=1
 -DHAVE_GRP_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_LIMITS_H=1 -DHAVE_LOCALE_H=1
 -DHAVE_MEMORY_H=1 -DHAVE_NCURSES_H=1 -DHAVE_POLL_H=1 -DHAVE_PWD_H=1
 -DHAVE_STDINT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_SYS_IOCTL_H=1
 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_POLL_H=1 -DHAVE_SYS_RESOURCE_H=1
 -DHAVE_SYS_SELECT_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_SYS_TIME_H=1
 -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_UTSNAME_H=1
 -DHAVE_TERMCAP_H=1 -DHAVE_UNISTD_H=1 -DHAVE_UTIME_H=1 -DHAVE_SSTREAM=1
 -DHAVE_TERMIO_H=1 -DHAVE_SGTTY_H=1 -DHAVE_GLOB_H=1 -DHAVE_FNMATCH_H=1
 -DHAVE_FNMATCH=1 -DHAVE_GLOB=1 -DHAVE_ATEXIT=1 -DHAVE_BASENAME=1
 -DHAVE_BCOPY=1 -DHAVE_BZERO=1 -DHAVE_CANONICALIZE_FILE_NAME=1
 -DHAVE_CHMOD=1 -DHAVE_DUP2=1 -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1
 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1 -DHAVE_FORK=1 -DHAVE_GETCWD=1
 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1 -DHAVE_GETGID=1 -DHAVE_GETGRENT=1
 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1 -DHAVE_GETPGRP=1 -DHAVE_GETPID=1
 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1 -DHAVE_GETPWUID=1 -DHAVE_GETTIMEOFDAY=1
 -DHAVE_GETUID=1 -DHAVE_GETWD=1 -DHAVE_KILL=1 -DHAVE_LGAMMA=1
 -DHAVE_LINK=1 -DHAVE_LOCALTIME_R=1 -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1
 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1 -DHAVE_MKSTEMP=1 -DHAVE_ON_EXIT=1
 -DHAVE_PIPE=1 -DHAVE_POLL=1 -DHAVE_PUTENV=1 -DHAVE_RAISE=1
 -DHAVE_READLINK=1 -DHAVE_REALPATH=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1
 -DHAVE_RMDIR=1 -DHAVE_ROUND=1 -DHAVE_SELECT=1 -DHAVE_SETGRENT=1
 -DHAVE_SETLOCALE=1 -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1
 -DHAVE_SIGLONGJMP=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1
 -DHAVE_SIGSUSPEND=1 -DHAVE_SNPRINTF=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1
 -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1
 -DHAVE_STRSIGNAL=1 -DHAVE_SYMLINK=1 -DHAVE_TEMPNAM=1 -DHAVE_TGAMMA=1
 -DHAVE_UMASK=1 -DHAVE_UNAME=1 -DHAVE_UNLINK=1 -DHAVE_USLEEP=1
 -DHAVE_UTIME=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1
 -DHAVE_WAITPID=1 -DHAVE_STRFTIME=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1
 -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DHAVE_DLOPEN_API=1
 -DENABLE_DYNAMIC_LINKING=1 -DHAVE_TIMEVAL=1 -DHAVE_FINITE=1
 -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_COPYSIGN=1 -DHAVE_DECL_SIGNBIT=1
 -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1
 -DHAVE_EXP2=1 -DHAVE_LOG2=1 -DHAVE_STRUCT_STAT_ST_BLKSIZE=1
 -DHAVE_STRUCT_STAT_ST_BLOCKS=1 -DHAVE_STRUCT_STAT_ST_RDEV=1
 -DHAVE_STRUCT_TM_TM_ZONE=1 -DHAVE_TM_ZONE=1 -DUSE_READLINE=1
 -DEXCEPTION_IN_MATH=1 -DRETSIGTYPE=void -DHAVE_DECL_SYS_SIGLIST=1
 -DHAVE_POSIX_SIGNALS=1 -DRETSIGTYPE_IS_VOID=1 -DHAVE_GETRUSAGE=1
 -DHAVE_TIMES=1 -DGNUPLOT_BINARY="gnuplot"

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

 EDITOR = emacs
 EXEC_PATH = /usr/local/libexec/octave/3.0.3/site/exec/i686-pc-linux-gnu:/usr/local/libexec/octave/api-v32/site/exec/i686-pc-linux-gnu:/usr/local/libexec/octave/site/exec/i686-pc-linux-gnu:/usr/local/libexec/octave/3.0.3/exec/i686-pc-linux-gnu:/usr/local/bin:/opt/Xilinx/10.1/ISE/bin/lin:/home/seb/mydata/Myruby:/home/seb/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/seb/bin/modeltech/linux
 IMAGE_PATH = .:/usr/local/share/octave/3.0.3/imagelib
 PAGER = less
 PS1 = \s:\#>
 PS2 = >
 PS4 = +
 beep_on_error = 0
 completion_append_char =
 crash_dumps_octave_core = 1
 echo_executing_commands = 0
 fixed_point_format = 0
 gnuplot_binary = gnuplot
 gnuplot_command_end =

 gnuplot_command_plot = pl
 gnuplot_command_replot = rep
 gnuplot_command_splot = sp
 gnuplot_command_title = t
 gnuplot_command_using = u
 gnuplot_command_with = w
 history_file = /home/seb/.octave_hist
 history_size = 1024
 ignore_function_time_stamp = system
 info_file = /usr/local/share/info/octave.info
 info_program = info
 makeinfo_program = makeinfo
 max_recursion_depth = 256
 output_max_field_width = 5
 output_precision = 5
 page_output_immediately = 0
 page_screen_output = 1
 print_answer_id_name = 1
 print_empty_dimensions = 1
 save_precision = 16
 saving_history = 1
 sighup_dumps_octave_core = 1
 sigterm_dumps_octave_core = 1
 silent_functions = 0
 split_long_rows = 1
 string_fill_char =
 struct_levels_to_print = 2
 suppress_verbose_help_message = 0