Re: [sage-release] square root very strange in 8.5.beta3

2018-11-14 Thread Bruno Grenet 
As far as I can tell, this behavior is not new. The (default) choice 
made for the square root of an integer is to return an exact answer 
rather than an approximation. Thus sqrt(9) = 3, sqrt(10) = sqrt(10) and 
sqrt(12) = 2*sqrt(3). On the other hand, a floating point number is 
viewed as an approximation of a real number so the value returned by 
sqrt is then an approximation of the square root.


Note that the default behavior for integers can be changed using 
optional parameters:


sage: sqrt(10, prec=100)
3.1622776601683793319988935444
sage: sqrt(10, prec=100, all=True)
[3.1622776601683793319988935444, -3.1622776601683793319988935444]

Regards,
Bruno

Le 14/11/2018 à 09:20, Henri Girard a écrit :

HI,

I am calculating a square root sqrt(9)=3

But at 10 and over I got this answer sqrt(10)= sqrt(10) except 
sqrt(16)=4 when it's a right square


but sqrt(10.0)=3.16... Is it a normal answer ?

sqrt(16)=4 works

Any explaination ?

Regards

Henri



--
You received this message because you are subscribed to the Google Groups 
"sage-release" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-release+unsubscr...@googlegroups.com.
To post to this group, send email to sage-release@googlegroups.com.
Visit this group at https://groups.google.com/group/sage-release.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-release] Sage 6.7.beta4 released

2015-05-06 Thread Bruno Grenet 

"make distclean && make ptestlong" finishes with

--
All tests passed!
--

on Linux Mint 17.1 64 bit.

Bruno

Le 06/05/2015 10:29, Michael Welsh a écrit :

On 6/05/2015, at 0759, Volker Braun  wrote:

This should now compile with gcc 5 and xcode 6.3.1

That it does (OS X 10.10.3), with CLT 6.3.1.

One testing error:
--
sage -t --long --warn-long 48.6 src/sage/interfaces/gap.py  # Timed out
--



--
You received this message because you are subscribed to the Google Groups 
"sage-release" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-release+unsubscr...@googlegroups.com.
To post to this group, send email to sage-release@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-release.
For more options, visit https://groups.google.com/d/optout.