> hexadecimal is just another representation format for the more abstract concept of an integer

minor nitpick, to my surprise it's now possible to define hexadecimal floats.

see perldata#Scalar-value-constructors

0x1.999ap-4         # hexadecimal floating point (the "p" is required)

couldn't test yet, seems to be newer than 5.16 :)

update

yep 

  DB<1> p $]
5.024001
  DB<2> p 0x1.999Ap-4
0.100000381469727

[download]

Though not mentioned in perlnumber yet

update

seems to work, the exponent 4 counts to the power of 2 (NOT 16 or 256). (16**4 is there to move the fraction point)

  DB<37> p 0x1999A /16**4 /2**4
0.100000381469727

[download]

And it becomes obvious why p was used since an E is a valid hex digit.

more testing

  DB<49> eval qq{print 0x1p${_},"\n"} for -4..4
0.0625
0.125
0.25
0.5
1
2
4
8
16

[download]

Hex fraction point moves with each 4 power steps (since 16 == 2**4 ) 

  DB<58> x 0x10 ,  0x1.0p4 , 0x1.0p0 , 0x10p-4
0  16
1  16
2  1
3  1

[download]

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Wikisyntax for the Monastery

In reply to Re^2: hexadecimal division (hexadecimal floating point -updated) by LanX
in thread hexadecimal division by holandes777

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