From bug-octave-request at bevo dot che dot wisc dot edu  Mon Jan 24 12:30:12 2000
Subject: isnan(NaN) = 0
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Gerard Kok <kokg at geo dot vu dot nl>
Cc: bug-octave at bevo dot che dot wisc dot edu
Date: Mon, 24 Jan 2000 12:30:14 -0600 (CST)

On 24-Jan-2000, Gerard Kok <kokg at geo dot vu dot nl> wrote:

| Bug report for Octave 2.0.15 configured for sparc-sun-solaris2.6
| 
| Description:
| -----------
| 
| isnan(NaN) returns 0, where it should return 1.
| 
| Repeat-By:
| ---------
| 
| octave:1> isnan(NaN)
| ans = 0

| DEFS:
| 
|   -DOCTAVE_SOURCE=1 -DSEPCHAR=':' -DSEPCHAR_STR=":" -DUSE_READLINE=1
|   -D__NO_MATH_INLINES=1 -DCXX_NEW_FRIEND_TEMPLATE_DECL=1 -DHAVE_LIBM=1
|   -DF77_APPEND_UNDERSCORE=1 -DHAVE_LIBSOCKET=1 -DSIZEOF_SHORT=2
|   -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1
|   -DNPOS=string::npos -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_FLOATINGPOINT_H=1 -DHAVE_FNMATCH_H=1 -DHAVE_GLOB_H=1
|   -DHAVE_GRP_H=1 -DHAVE_IEEEFP_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1
|   -DHAVE_NAN_H=1 -DHAVE_NCURSES_H=1 -DHAVE_POLL_H=1 -DHAVE_PWD_H=1
|   -DHAVE_SGTTY_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_TERMIO_H=1
|   -DHAVE_TERMIOS_H=1 -DHAVE_UNISTD_H=1 -DHAVE_VARARGS_H=1 -DHAVE_ATEXIT=1
|   -DHAVE

It looks like the problem is that configure is not finding the
function isnan on your system (HAVE_ISNAN should be defined in the
generated config.h file).  Can you please try to debug why that
happens?  Take a look at config.log for clues.

Thanks,

jwe



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