* [9fans] Inf isInf, NaN, isNaN
@ 2004-03-05 13:04 David Tolpin
2004-03-05 14:43 ` Charles Forsyth
0 siblings, 1 reply; 5+ messages in thread
From: David Tolpin @ 2004-03-05 13:04 UTC (permalink / raw)
To: 9fans
Hi,
ape/math.h defines Inf, isInf, NaN, isNaN; but I cannot find them
in either ISO C standard, or my POSIX reference. Inf results in
a name conflict with an otherwise POSIX compliant source.
Instead, ISO/IEC 9989:1999 (The ISO C Standard) defines
isinf() and isnan() macros, which are absent from the library.
David Tolpin
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] Inf isInf, NaN, isNaN
2004-03-05 13:04 [9fans] Inf isInf, NaN, isNaN David Tolpin
@ 2004-03-05 14:43 ` Charles Forsyth
2004-03-05 14:47 ` David Tolpin
0 siblings, 1 reply; 5+ messages in thread
From: Charles Forsyth @ 2004-03-05 14:43 UTC (permalink / raw)
To: 9fans
>>Instead, ISO/IEC 9989:1999 (The ISO C Standard) defines
>>isinf() and isnan() macros, which are absent from the library.
ape predates c9x, which (i suspect) added those--i don't remember
them from the earlier standard--but that's really just a cue
for doug gwyn to contradict me. i'd check myself, but
for some reason, my c book is always where i am not.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] Inf isInf, NaN, isNaN
2004-03-05 14:43 ` Charles Forsyth
@ 2004-03-05 14:47 ` David Tolpin
2004-03-05 17:13 ` David Tolpin
0 siblings, 1 reply; 5+ messages in thread
From: David Tolpin @ 2004-03-05 14:47 UTC (permalink / raw)
To: 9fans
> >>Instead, ISO/IEC 9989:1999 (The ISO C Standard) defines
> >>isinf() and isnan() macros, which are absent from the library.
>
> ape predates c9x, which (i suspect) added those--i don't remember
> them from the earlier standard--but that's really just a cue
> for doug gwyn to contradict me. i'd check myself, but
> for some reason, my c book is always where i am not.
>
For me, the problem was not that isnan was not declared, but that
isNaN was.
David
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] Inf isInf, NaN, isNaN
2004-03-05 14:47 ` David Tolpin
@ 2004-03-05 17:13 ` David Tolpin
2004-03-05 19:26 ` David Presotto
0 siblings, 1 reply; 5+ messages in thread
From: David Tolpin @ 2004-03-05 17:13 UTC (permalink / raw)
To: 9fans
> > ape predates c9x, which (i suspect) added those--i don't remember
> > them from the earlier standard--but that's really just a cue
> > for doug gwyn to contradict me. i'd check myself, but
> > for some reason, my c book is always where i am not.
> >
>
> For me, the problem was not that isnan was not declared, but that
> isNaN was.
>
That is, any chance Inf, isInf, NaN, isNaN can be locked out by
_POSIX_SOURCE or will it break something important enough?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] Inf isInf, NaN, isNaN
2004-03-05 17:13 ` David Tolpin
@ 2004-03-05 19:26 ` David Presotto
0 siblings, 0 replies; 5+ messages in thread
From: David Presotto @ 2004-03-05 19:26 UTC (permalink / raw)
To: 9fans
[-- Attachment #1: Type: text/plain, Size: 18 bytes --]
For you, anything.
[-- Attachment #2: Type: message/rfc822, Size: 2554 bytes --]
From: David Tolpin <dvd@davidashen.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Inf isInf, NaN, isNaN
Date: Fri, 5 Mar 2004 21:13:28 +0400 (AMT)
Message-ID: <200403051713.i25HDSt7060442@adat.davidashen.net>
> > ape predates c9x, which (i suspect) added those--i don't remember
> > them from the earlier standard--but that's really just a cue
> > for doug gwyn to contradict me. i'd check myself, but
> > for some reason, my c book is always where i am not.
> >
>
> For me, the problem was not that isnan was not declared, but that
> isNaN was.
>
That is, any chance Inf, isInf, NaN, isNaN can be locked out by
_POSIX_SOURCE or will it break something important enough?
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2004-03-05 19:26 UTC | newest]
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2004-03-05 13:04 [9fans] Inf isInf, NaN, isNaN David Tolpin
2004-03-05 14:43 ` Charles Forsyth
2004-03-05 14:47 ` David Tolpin
2004-03-05 17:13 ` David Tolpin
2004-03-05 19:26 ` David Presotto
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