update pynac to 0.2.2

[burcin]

Here is the long awaited pynac update. It includes patches from upstream (ginac) which fix Sage bugs and should be easy to review.

http://sage.math.washington.edu/home/burcin/pynac/pynac-0.2.2.spkg

This package fixes #9891, #9947 and #8943. Attached patch also adds some more doctests to the Sage library.

I hope this can get reviewed and merged soon. There will be an new release with more substantial changes like #9880.

CC: @jpflori @vbraun @kcrisman

Component: symbolics

Author: Richard Kreckel, Vladimir V. Kisil, Jan Rheinländer, Alexei Sheplyakov, Burcin Erocal

Reviewer: Karl-Dieter Crisman

Merged: sage-4.7.1.alpha1

Issue created by migration from https://trac.sagemath.org/ticket/11317

[burcin]

comment:1

Attachment: trac_11317-conjugate_tests.patch.gz

[kcrisman]

Reviewer: Karl-Dieter Crisman

[kcrisman]

comment:2

This is fine too. Notice that there is a typo in the Ginac upstream.

static ex tanh_conjugate(const ex & x)
{
	// conjugate(tan(x))==tan(conjugate(x))
	return tanh(x.conjugate());
}

The method is correct, but the doc says tan, not tanh.

---

As for the other things, they are nearly all compiler improvements. I'll just check these work on sage.math, but otherwise looks good to go.

[kcrisman]

comment:3

Good to go. Thank you so much for keeping up with this, Burcin!

[jdemeyer]

Merged: sage-4.7.1.alpha1