Re: build failure (alpha-current): floating point exception 8

[Nicolas Joly <njoly%pasteur.fr@localhost>]

On Tue, Mar 03, 2009 at 08:53:08AM -0500, Christos Zoulas wrote:
> On Mar 3,  2:16pm, njoly%pasteur.fr@localhost (Nicolas Joly) wrote:
> -- Subject: Re: build failure (alpha-current): floating point exception 8
> 
> | > njoly@thanos [~/tmp]> gdb /local/src/NetBSD/tool/bin/nbawk 
> | > GNU gdb 6.5
> | > [...]
> | > This GDB was configured as "alpha--netbsd"...
> | > (gdb) run '$NF!~/^rump/' 1.out
> | > Starting program: /local/src/NetBSD/tool/bin/nbawk '$NF!~/^rump/' 1.out
> | > [...]
> | > Program received signal SIGFPE, Arithmetic exception.
> | > 0x0000000120011004 in is_number (s=0x160308024 "nanotime")
> | >     at /local/src/NetBSD/src/dist/nawk/lib.c:713
> | > 713             if (ep == s || r == HUGE_VAL || errno == ERANGE)
> | 
> | To be sure, i removed the `r == HUGE_VAL' and the build succeeded.
> | 
> | If i understand correctly, HUGE_VAL is used to check for for infinity
> | (wonder if INFINITY should be used instead ?). But nothing check for
> | NaN ...
> | 
> | While here i noted that strtod(3) man page state that `NAN' sequence
> | string are not supported, which does not looks correct anymore:
> | 
> |      -   one of NAN or NAN(n-char-sequence-opt), ignoring case. This
> |          implementation currently does not interpret such a sequence.
> 
> I think one should use isinf() or isnan(), since there is +/- inf and many
> nans.

Are they portable enough for host tool ? My Tru64 do miss isinf().

-- 
Nicolas Joly

Biological Software and Databanks.
Institut Pasteur, Paris.