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Re^4: return +0

by diotalevi (Canon)
on Nov 27, 2007 at 16:53 UTC ( #653305=note: print w/replies, xml ) Need Help??


in reply to Re^3: return +0
in thread return +0

Just note that -.0 is distinct from .0.

⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊

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Re^5: return +0 (-.0?)
by tye (Sage) on Nov 27, 2007 at 22:10 UTC

    Perhaps you could be less vague. There is no such distinction in my tests:

    > perl -MDevel::Peek -e"Dump(+.0)" SV = NV(0xa4a5fc) at 0x3d53c4 REFCNT = 1 FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK) NV = 0 > perl -MDevel::Peek -e"Dump(-.0)" SV = NV(0xa4a60c) at 0x3d53f4 REFCNT = 1 FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK) NV = 0 > perl -MDevel::Peek -e"Dump(.0)" SV = NV(0xa4a5fc) at 0x3d53c4 REFCNT = 1 FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK) NV = 0

    - tye        

      It depends on the math libraries? They're different here, at least:

      sidhekin@blackbox[23:22:41]~$ perl -MDevel::Peek -le 'Dump(.0)' SV = NV(0x816e490) at 0x814dce4 REFCNT = 1 FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK) NV = 0 sidhekin@blackbox[23:22:51]~$ perl -MDevel::Peek -le 'Dump(-.0)' SV = NV(0x816e4a0) at 0x814dd20 REFCNT = 1 FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK) NV = -0 sidhekin@blackbox[23:22:53]~$

      print "Just another Perl ${\(trickster and hacker)},"
      The Sidhekin proves Sidhe did it!

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