#358: complex NaN
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Reporter: rurban | Owner: rurban
Type: bug | Status: assigned
Priority: normal | Milestone:
Component: none | Version:
Severity: medium | Keywords:
Lang: | Patch:
Platform: |
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Comment(by rurban):
Current situation:
{{{
$P1=new ["Complex"]
$P2=new ["Complex"]
$P1="NaN"
$P2="i"
$P2 = mul $P1, $P2
say $P2
}}}
The result is "NaNi", because both parts are treated individually and the
plus is dropped from i in the printout.
NaN in the real part will not harm the calculation if the
imaginary part in non-NaN: NaN+i * 1-2i = NaN-2i
The string representation of a complex is sprintf("%vg%+vgi", re, im)
So NaN-2i is "NaN-2i" and NaN+i is printed as "NaNi"
So NaN * 1i = NaNi
The proposed is the represent a complex with either the real
or imaginary part of NaN as "NaN", and do not seperate them.
--
Ticket URL: <https://trac.parrot.org/parrot/ticket/358#comment:3>
Parrot <https://trac.parrot.org/parrot/>
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