And internally floats are stored in the string-slot of a variable
No they're not. An xpvnv has separate slots for an int, a float and a string: 
[davem@pigeon bleed]$ p -MDevel::Peek -e'$x=1; $x=2.2; $x = "three"; D
+ump $x'
SV = PVNV(0x1ae3150) at 0x1b021d0
  REFCNT = 1
  FLAGS = (POK,pPOK)
  IV = 1
  NV = 2.2
  PV = 0x1afb360 "three"\0
  CUR = 5
  LEN = 16

[download]

Dave.

In reply to Re^2: log() and int() problem by dave_the_m
in thread log() and int() problem by Anonymous Monk

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