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Int**Int yields bogus overflow #5814

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p6rt opened this issue Nov 23, 2016 · 2 comments
Open

Int**Int yields bogus overflow #5814

p6rt opened this issue Nov 23, 2016 · 2 comments
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9999 Bug

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@p6rt
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p6rt commented Nov 23, 2016

Migrated from rt.perl.org#130153 (status was 'new')

Searchable as RT130153$
@p6rt
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p6rt commented Nov 23, 2016

From zefram@fysh.org

2e0**-1019
1.78005908680576e-307
2e0**-1020
8.90029543402881e-308
2**-1019
1.78005908680576e-307
2**-1020
Numeric overflow
  in block <unit> at <unknown file> line 1

The result for 2**-1020 is bogus. The exact value of the operation
is representable in the Num type, as was used to represent the result
of 2**-1019.

-zefram

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p6rt commented Nov 24, 2016

From @zoffixznet

MoarVM PR fixing this sent​: MoarVM/MoarVM#442

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