From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Floating point exception in strtod()
Date: Mon, 09 Apr 2018 15:33:00 -0000 [thread overview]
Message-ID: <20180409153301.GH29703@calimero.vinschen.de> (raw)
In-Reply-To: <0F7D3B1B3C4B894D824F5B822E3E5A177861A71E@IRSMSX102.ger.corp.intel.com>
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On Apr 9 14:45, Soegtrop, Michael wrote:
> Dear Corinna,
>
> > L is of type Long == int32_t, aadj is of type double. The value of
> > aadj at this time is 2529648000.0 == 0x96c75d80 which appears to be
> > perfectly valid for a 32 bit int.
>
> 2529648000 is a valid unsigned long, but not a valid signed long. The
> largest 32 bit long is 2^31-1 = 2147483647. 0x96c75d80 interpreted as
> a signed long is a negative number.
>
> I would say if floating point instructions are used to convert
> 2529648000 to a signed 32 bit integer, they should produce an
> FE_INVALID exception.
...which is what I described in the rest of my mail :)
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat
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next prev parent reply other threads:[~2018-04-09 15:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-07 17:40 Ken Brown
2018-04-07 20:52 ` Dan Kegel
2018-04-08 12:57 ` Soegtrop, Michael
2018-04-07 20:56 ` Eliot Moss
2018-04-08 3:12 ` Duncan Roe
2018-04-08 10:25 ` Hans-Bernhard Bröker
2018-04-09 9:47 ` Corinna Vinschen
2018-04-09 12:09 ` Ken Brown
2018-04-09 12:51 ` Corinna Vinschen
2018-04-09 14:46 ` Soegtrop, Michael
2018-04-09 15:33 ` Corinna Vinschen [this message]
2018-04-09 15:55 ` Soegtrop, Michael
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