#17329: sage-6.4.rc1 (and earlier) crashes when evaluating
zeta(CDF(-151.386325246
+ 992.34771962*I))
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Reporter: was | Owner:
Type: defect | Status: new
Priority: critical | Milestone: sage-6.4
Component: number theory | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by was):
This was found by Austin Tran, who reported
{{{
f(z)=zeta(z^2)
complex_plot(f,(-10,10),(-10,10),axes=False,figsize=[10,10],plot_points=1000)
}}}
which workes fine, but the same expression with zeta(z^3) instead returned
the given error. In particular,
{{{
f(z)=zeta(z^3)
complex_plot(f,(-10,10),(-10,10),axes=False,figsize=[10,10],plot_points=1000)
}}}
gives an error. I tried doing this:
{{{
m=0
def f(z):
global m
m = z
return zeta(z^3)
complex_plot(f,(-10,10),(-10,10),axes=False,figsize=[3,3],plot_points=100)
}}}
and found that the problem was caused when z = 0.505050505051 - 10.0*I.
I then tried explicitly computing zeta(z^3) and got the core dump.
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Ticket URL: <http://trac.sagemath.org/ticket/17329#comment:1>
Sage <http://www.sagemath.org>
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