#11753: Fix step=0 in (x)srange
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Reporter: ppurka | Owner: jason, was
Type: defect | Status: needs_work
Priority: minor | Milestone: sage-4.7.2
Component: graphics | Keywords: srange xsrange division_by_zero
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Changes (by dimpase):
* status: needs_review => needs_work
Comment:
Replying to [comment:11 ppurka]:
> Replying to [comment:10 dimpase]:
> > The condition {{{step == 0}}} you check looks worrisome. From a glance
over the code it's not clear whether {{{step}}} cannot be a float, and if
it is a float, then such a test does not make much sense.
>
> Should be fixed now.
Ever written "real" numerical code?
{{{min(range_steps) == float(0)}}} won't fly. You need something like
{{{min(range_steps)<C*sys.float_info.epsilon}}}, for {{{C}}}
something like 2 or 10...
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11753#comment:12>
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