From owner-bug-octave at bevo dot che dot wisc dot edu Wed Dec 18 03:40:30 1996 From: Tapani Stipa To: bug-octave at bevo dot che dot wisc dot edu Date: Wed, 18 Dec 1996 11:36:36 +0200 To: bug-octave at bevo dot che dot wisc dot edu Subject: fscanf reads strange values on Octave 2.0 /linux Bug report for Octave 2.0 configured for i586-pc-linux-gnu Description: ----------- As a first number in my data file, I have the date 9508150000. When I try to read this as a floating point number into Octave, it gives 9508150272. When I read it as a string, it is fine. I think the significant digits should suffice for this? I have a fairly basic RedHat 4.0 linux system. I would be grateful to know if this problem is not present in any other compilations, which could mean there is a bug in my slightly modified gcc compiler. Repeat-By: --------- The head of my file is: 9508150000 1 1 28 0.88973E-03 0.10314E-02 0.10444E-02 0.10690E-02 0.18500E-01 0.18500E-01 0.18500E-01 0.18500E-01 0.15000E-04 0.38984E-04 0.42139E-04 0.48624E-04 0.89170E-01 0.14375E+00 0.14946E+00 0.16055E+00 0.26966E+01 0.51531E+01 0.50473E+01 0.53488E+01 0.65338E+00 0.24055E+01 0.45210E+00 0.24072E+00 -0.58657E+02-0.71907E+02-0.72611E+02-0.71236E+02 9508150002 1 1 28 0.88973E-03 0.10276E-02 0.10438E-02 0.10685E-02 0.18500E-01 0.18500E-01 0.18500E-01 0.18500E-01 0.15000E-04 0.38086E-04 0.41979E-04 0.48481E-04 0.89170E-01 0.14209E+00 0.14917E+00 0.16031E+00 0.26966E+01 0.51531E+01 After a ifid=fopen("BALecawom.zeit.fmt","r") I try the following: octave:45> frewind(ifid) ans = 0 octave:46> a=fscanf(ifid,"%10f","C") a = 9508150272 octave:47> frewind(ifid) ans = 0 octave:48> a=fscanf(ifid,"%10s","C") a = 9508150000 octave:49> frewind(ifid) ans = 0 octave:50> a=fscanf(ifid,"%20s","C") a = 9508150000 octave:51> frewind(ifid) ans = 0 octave:52> a=fscanf(ifid,"%11f","C") a = 9508150272 Configuration (please do not edit this section): ----------------------------------------------- uname output: Linux kuohu.fimr.fi 2.0.18 #1 Tue Sep 10 10:15:48 EDT 1996 i586 configure opts: Fortran compiler: g77 FFLAGS: -O F2C: F2CFLAGS: FLIBS: -lf2c -L/usr/lib/gcc-lib/i486-linux/2.7.2.1.f.1 -lgcc CPPFLAGS: INCFLAGS: -I/usr/local/include -I/usr/local/include/octave-2.0 C compiler: gcc, version 2.7.2.1.f.1 CFLAGS: -DHAVE_CONFIG_H -mieee-fp -g -O2 -Wall CPICFLAG: -fPIC C++ compiler: c++, version 2.7.2.1.f.1 CXXFLAGS: -DHAVE_CONFIG_H -fno-implicit-templates -mieee-fp -g -O2 -Wall CXXPICFLAG: -fPIC LDFLAGS: -g LIBFLAGS: -L/usr/local/lib RLD_FLAG: -Xlinker -rpath -Xlinker /usr/local/lib CXXLIBS: -lstdc++ -lm -L/usr/lib/gcc-lib/i486-linux/2.7.2.1.f.1 -lstdc++ -lm -lgcc -lc -lgcc TERMLIBS: -ltermcap LIBS: LEXLIB: LIBPLPLOT: LIBDLFCN: DEFS: -DOCTAVE_SOURCE=1 -DSEPCHAR=':' -DSEPCHAR_STR=":" -DUSE_GNU_INFO=1 -DUSE_READLINE=1 -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DF77_APPEND_UNDERSCORE=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_FCNTL_H=1 -DHAVE_FLOAT_H=1 -DHAVE_GRP_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1 -DHAVE_NAN_H=1 -DHAVE_NCURSES_H=1 -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_RESOURCE_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_TERMIO_H=1 -DHAVE_TERMIOS_H=1 -DHAVE_UNISTD_H=1 -DHAVE_VARARGS_H=1 -DNPSOL_MISSING=1 -DQPSOL_MISSING=1 -DFSQP_MISSING=1 -DHAVE_ATEXIT=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=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_GETHOSTNAME=1 -DHAVE_GETPGRP=1 -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1 -DHAVE_GETPWNAM=1 -DHAVE_GETPWUID=1 -DHAVE_GETUID=1 -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_PUTENV=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1 -DHAVE_SETGRENT=1 -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1 -DHAVE_SIGSUSPEND=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1 -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRNCASECMP=1 -DHAVE_TEMPNAM=1 -DHAVE_UMASK=1 -DHAVE_UNLINK=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_WAITPID=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1 -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DWITH_DL=1 -DWITH_DYNAMIC_LINKING=1 -DHAVE_LIBM=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1 -DHAVE_ST_BLKSIZE=1 -DHAVE_ST_BLOCKS=1 -DHAVE_ST_RDEV=1 -DHAVE_TZNAME=1 -DHAVE_GR_PASSWD=1 -DRETSIGTYPE=void -DSYS_SIGLIST_DECLARED=1 -DHAVE_SYS_SIGLIST=1 -DHAVE_POSIX_SIGNALS=1 -DHAVE_GETRUSAGE=1 -DHAVE_TIMES=1