On Tue, Feb 24, 2015 at 9:56 AM, Ralf Stephan wrote:
> On Tuesday, February 24, 2015 at 6:49:57 PM UTC+1, William wrote:
>> On Tue, Feb 24, 2015 at 9:31 AM, Ralf Stephan wrote:
>> > On Saturday, April 28, 2012 at 6:40:55 PM UTC+2, Volker Braun wrote:
>> >>
>> >> The floating point "fields" in Sag
On Tuesday, February 24, 2015 at 6:49:57 PM UTC+1, William wrote:
> On Tue, Feb 24, 2015 at 9:31 AM, Ralf Stephan wrote:
> > On Saturday, April 28, 2012 at 6:40:55 PM UTC+2, Volker Braun wrote:
> >>
> >> The floating point "fields" in Sage (RR or RDF) can represent both
> >> infinity and NaN. So y
On Tue, Feb 24, 2015 at 9:31 AM, Ralf Stephan wrote:
> On Saturday, April 28, 2012 at 6:40:55 PM UTC+2, Volker Braun wrote:
>>
>> The floating point "fields" in Sage (RR or RDF) can represent both
>> infinity and NaN. So you'll have to check separately if this is the case.
>> Note that "x in RR" c
On Saturday, April 28, 2012 at 6:40:55 PM UTC+2, Volker Braun wrote:
>
> The floating point "fields" in Sage (RR or RDF) can represent both
> infinity and NaN. So you'll have to check separately if this is the case.
> Note that "x in RR" checks that x can be represented in RR.
But then why is p
Of course, x.n().is_real() condition needs to be added as in:
http://aleph.sagemath.org/?z=eJxLVLBV0DXUNzTSKshU0FYAs4oLi0o0DM0gIgWZcUZAysjUTBNImegbcyUBtSQWJSfnF2sYaXIlE2GAhpGWpyaqIVwFRZl5JQpJ-fk5Gol6eRqaCoq2Cn6JfgqJeSkKYAG9zOL4otTEHA1NTWTFSeiKk_AoTkZXnIymGAAkrEPy
On Monday, May 7, 2012 1:56:21 PM
With very kind & generous help of Robert Samal following solution was
proposed:
bool(x.n() != NaN)
should give out True iff x is a real number. It seems to work:
http://aleph.sagemath.org/?z=eJxLVLBV0DXUNzTSKshU0FYAs4oLi0o0DM0gIgWZcUZAysjUTBNImegbcyUBtSQWJSfnF2sYaXJxFRRl5pUoJOXn52gk6uVpaCoo2ir4J
The floating point "fields" in Sage (RR or RDF) can represent both infinity
and NaN. So you'll have to check separately if this is the case. Note that
"x in RR" checks that x can be represented in RR.
On Saturday, April 28, 2012 7:38:44 AM UTC-4, Duc Trung Ha wrote:
>
> Hola,
>
> I'm stuck at
