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That's just a bug. Or it should be considered one.

Perl> use Devel::Peek;; Perl> $n = 9_999_999_998; print Dump( $n ); print $n & 1; print Dump( +$n );; SV = NV(0x1844044) at 0x19920c4 REFCNT = 1 FLAGS = (NOK,pNOK) NV = 9999999998 1 SV = PVNV(0x1985a0c) at 0x19920c4 REFCNT = 1 FLAGS = (NOK,pIOK,pNOK,IsUV) UV = 4294967295 NV = 9999999998 PV = 0

The silent 'promotion' of the NV to an UV with data loss is very messy.

It's also kinda schizophrenic when you consider that perl does differentiate between integer and real operations some places. Take the arbitrary and intensely annoying case of:

Perl> $c++ for 1 .. 2**32;; [Range iterator outside integer range at (eval 7) line 1, <STDIN> line + 3.

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In reply to Re^3: &1 is no faster than %2 when checking for oddness. Oh well. (range) by BrowserUk
in thread &1 is no faster than %2 when checking for oddness. Oh well. by diotalevi

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