#15542: Rounding weirdness when increasing the precision of a real number
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Reporter: | Owner:
mmezzarobba | Status: positive_review
Type: defect | Milestone: sage-duplicate/invalid/wontfix
Priority: major | Resolution:
Component: | Merged in:
numerical | Reviewers: Jeroen Demeyer
Keywords: | Work issues:
Authors: | Commit:
Report Upstream: N/A | Stopgaps:
Branch: |
Dependencies: |
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Comment (by zimmerma):
I find this "feature" quite inconsistent with what is done for other
fields:
{{{
sage: ComplexField(200)(CC(1.0e-20))
9.9999999999999994515327145420957165172950370278739244710772e-21
sage: RealIntervalField(100)(RIF("1.0e-20"))
[9.9999999999999994515327145420957e-21 ..
1.0000000000000000956165483594624e-20]
}}}
Moreover:
{{{
sage: Reals(200)(RR(1.0e-20))
1.0000000000000000000000000000000000000000000000000000000000e-20
sage: Reals(200)(RR("1.0e-20"))
9.9999999999999994515327145420957165172950370278739244710772e-21
}}}
Paul
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Ticket URL: <http://trac.sagemath.org/ticket/15542#comment:3>
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