#12588: abs(pi*I) should return pi
-------------------------------------+-------------------------------------
Reporter: dkrenn | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.8
Component: symbolics | Resolution:
Keywords: absolute value, | Merged in:
symbolic | Reviewers: Karl-Dieter Crisman
Authors: Ralf Stephan | Work issues:
Report Upstream: Fixed upstream, | Commit:
in a later stable release. | 33e868c92e7cb2627739d717b79ad21854033beb
Branch: | Stopgaps:
u/rws/abs_pi_i__should_return_pi |
Dependencies: #18537 |
-------------------------------------+-------------------------------------
Comment (by rws):
New code in Pynac master is now able to do:
{{{
sage: abs(I*x)
abs(x)
sage: abs(I*pi)
pi
sage: abs(I*log(2))
log(2)
sage: abs(I*e^5)
e^5
sage: abs(log(1/2))
-log(1/2)
sage: abs(log(1/2)*log(1/3))
log(1/2)*log(1/3)
sage: abs(log(1/2)*log(1/3)*log(1/4))
-log(1/2)*log(1/3)*log(1/4)
sage: abs(log(1/2)*log(1/3)*log(1/4)*i)
-log(1/2)*log(1/3)*log(1/4)
sage: abs(log(1/pi))
-log(1/pi)
sage: abs(log(x))
abs(log(x))
sage: abs(zeta(I))
abs(zeta(I))
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/12588#comment:21>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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