Upgrade to pynac-0.6.91

[rwst]

• compiles with clang (fix by François Bissey)
• fix cot(float) bug; (doctest fix for: cot(float) returns complex #21365, fix by Paul Masson)
• NaN constant; return NaN with atan2(0,0) (Doctest fix for: Make atan2(0,0) return NaN #21614)
• numeric log fixes (Log function and documentation revamp #18970)
• prevent some overflow exceptions in cot/csc
• two-argument log (log to base) (Log function and documentation revamp #18970)
• Support gegenbauer(n,a,x) with non-numeric a (recurrence by Carlos R. Mafra)
• update AUTHORS

https://github.com/pynac/pynac/releases/download/pynac-0.6.91/pynac-0.6.91.tar.bz2

CC: @paulmasson @kiwifb

Component: packages: standard

Author: Ralf Stephan

Branch/Commit: 48dac6b

Reviewer: Paul Masson, Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/21623

[rwst]

Description changed:

--- 
+++ 
@@ -1,9 +1,9 @@
 * compiles with clang
 * fix `cot(float)` bug; (#21365)
 * NaN constant; return NaN with atan2(0,0) (#21614)
-* numeric log fixes
+* numeric log fixes (#18970)
 * prevent some overflow exceptions in `cot/csc`
-* two-argument log (log to base)
+* two-argument log (log to base) (#18970)
 * Support `gegenbauer(n,a,x)` with non-numeric `a`
 * update AUTHORS
 

[rwst]

Branch: u/rws/upgrade_to_pynac_0_6_91

[rwst]

Commit: aeb81e3

[rwst]

New commits:

b27d68d	version/chksum
aeb81e3	changes to support pynac-0.6.91

[rwst]

Author: Ralf Stephan

[rwst]

Description changed:

--- 
+++ 
@@ -1,10 +1,10 @@
-* compiles with clang
-* fix `cot(float)` bug; (#21365)
+* compiles with clang (fix by François Bissey)
+* fix `cot(float)` bug; (#21365, fix by Paul Masson)
 * NaN constant; return NaN with atan2(0,0) (#21614)
 * numeric log fixes (#18970)
 * prevent some overflow exceptions in `cot/csc`
 * two-argument log (log to base) (#18970)
-* Support `gegenbauer(n,a,x)` with non-numeric `a`
+* Support `gegenbauer(n,a,x)` with non-numeric `a` (recurrence by Carlos R. Mafra)
 * update AUTHORS
 
 https://github.com/pynac/pynac/releases/download/pynac-0.6.91/pynac-0.6.91.tar.bz2

[paulmasson]

comment:5

Documentation builds, but failing doctest in fast_callable.pyx.

Would like more information on "overflow exceptions in cot/csc", which is presumably this commit. What does this fix exactly?

The versioning is nonstandard. If this is a minor update it should be 0.6.9.1, otherwise 0.6.10.

[paulmasson]

Reviewer: Paul Masson