On Nov 7 2013, FX wrote:
Given how murky signaling NaNs are in practice, I think it's worth
asking: why do you want to know?
Because I am writing an implementation of the IEEE support modules in GNU
Fortran, which are part of the Fortran 2003 standard. And the standard
provides for a procedu
> Given how murky signaling NaNs are in practice, I think it's worth
> asking: why do you want to know?
Because I am writing an implementation of the IEEE support modules in GNU
Fortran, which are part of the Fortran 2003 standard. And the standard provides
for a procedure (IEEE_CLASS) to distin
On Wed, Nov 6, 2013 at 5:44 AM, FX wrote:
>
> GCC has a number of floating-point-related type-generic built-ins, which are
> great and which we largely rely on in the gfortran runtime library (rather
> than depending on the possibly poor-quality target math library).
>
> However, I have not been
On Wed, 6 Nov 2013, N.M. Maclaren wrote:
> > > Yes, due to the poor quality of the IEEE 754 specifications. In 1984,
> > > the distinction was left completely unspecified (even in intent). In
> > > 2008, there is a recommendation (no more) that the top bit of the payload
> > > is used, with no s
Yes, due to the poor quality of the IEEE 754 specifications. In 1984,
the distinction was left completely unspecified (even in intent). In
2008, there is a recommendation (no more) that the top bit of the payload
is used, with no specification of what to do if that is zero (which is
the most obv
On Wed, 6 Nov 2013, N.M. Maclaren wrote:
> Yes, due to the poor quality of the IEEE 754 specifications. In 1984,
> the distinction was left completely unspecified (even in intent). In
> 2008, there is a recommendation (no more) that the top bit of the payload
> is used, with no specification of
On Nov 6 2013, FX wrote:
GCC has a number of floating-point-related type-generic built-ins, which
are great and which we largely rely on in the gfortran runtime library
(rather than depending on the possibly poor-quality target math library).
However, I have not been able to find a way to te
On Wed, 6 Nov 2013, FX wrote:
> GCC has a number of floating-point-related type-generic built-ins, which
> are great and which we largely rely on in the gfortran runtime library
> (rather than depending on the possibly poor-quality target math
> library).
>
> However, I have not been able to f
Hi all,
GCC has a number of floating-point-related type-generic built-ins, which are
great and which we largely rely on in the gfortran runtime library (rather than
depending on the possibly poor-quality target math library).
However, I have not been able to find a way to test for a signaling N
