On Friday, February 27, 2015 at 7:58:24 PM UTC+1, Nils Bruin wrote:
>
> On Friday, February 27, 2015 at 8:36:52 AM UTC-8, Ralf Stephan wrote:
>
>> Which of these do not use Maxima?
>>
>
> You can figure that out by making sure that maxima doesn't work anymore:
>
Thanks. It appears to have nothin
On Friday, February 27, 2015 at 8:36:52 AM UTC-8, Ralf Stephan wrote:
> Which of these do not use Maxima?
>
You can figure that out by making sure that maxima doesn't work anymore:
sage: integrate(x,x) #trigger maxima initialization
1/2*x^2
sage: sage.libs.ecl.shutdown_ecl() #any existing ecl o
On Thursday, February 26, 2015 at 10:10:03 AM UTC+1, vdelecroix wrote:
>
> We also have
>
> sage: RR(tan(pi/20)) == CC(tan(pi/20))
> False
>
The utility code in #17866 uncovers more:
sage: bool(csc(2)==CC(csc(2)))
False
sage: bool(csch(2)==CC(csch(2)))
False
sage: bool(arcsec(2)==CC(arcsec(2)))
Assuming fp values cannot be equal, would it make more sense
to test elementship in CC by implementing ComplexField.__contains__()
instead of trusting Python or Maxima == ?
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We also have
sage: RR(tan(pi/20)) == CC(tan(pi/20))
False
But it seems right for cos, sin, exp, atan, cosh, sinh. Is there a way
to test all symbolic functions?
2015-02-26 10:02 UTC+01:00, Ralf Stephan :
> On Thursday, February 26, 2015 at 9:50:40 AM UTC+1, vdelecroix wrote:
>>
>> sage: bool(RR(
On Thursday, February 26, 2015 at 9:50:40 AM UTC+1, vdelecroix wrote:
>
> sage: bool(RR(sqrt(2)) == sqrt(2))
> False
> sage: sqrt(2).n() == RR(sqrt(2))
> True
>
These two come from bool(sqrt(2)==sqrt(2).n()) being False I think
(because Maxima is involved here) but this is different than
sage
Hello,
There is something wrong
sage: bool(RR(pi) == pi)
True
sage: bool(RR(golden_ratio) == golden_ratio)
True
which is fine to me. You coerce to the field with less precision. But
sage: bool(RR(sqrt(2)) == sqrt(2))
False
sage: sqrt(2).n() == RR(sqrt(2))
True
sage: RR(sqrt(2)) == CC(sqrt(2))
F
Hi,
with current Sage,
sage: bool(sqrt(2)==CC(sqrt(2)))
False
You would expect that this leads to
sage: sqrt(2) in CC
False
but due to a bug I'm fixing atm in #12967 this returns True.
However, now that it's fixed I'm faced with the question if
answer to both really should be False. If one doctes
