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Re: [xsl] floor() and idiv

2008-11-06 13:38:36
Well this one is interesting since in XPath 2 F&O spec
it is said that

[[
Thus, the semantics " $a idiv $b " are equivalent to " ($a div $b)
cast as xs:integer " except for error situations.
]]

A bug in the spec or in Saxon ?

  floor(1000000000000000000000000000000001 div
100000000000000000000000000000001),
  1000000000000000000000000000000001 idiv 100000000000000000000000000000001,
 (1000000000000000000000000000000001 div
100000000000000000000000000000001) cast as xs:integer

gives

10, 9, 10

Xmlizer

On Thu, Nov 6, 2008 at 7:04 PM, David Carlisle 
<davidc(_at_)nag(_dot_)co(_dot_)uk> wrote:

not for negative values

and not for some positive values either,


let
$x := 100000000000000000000000000000001,
$y := 1000000000000000000000000000000001
return
(floor($y div $x), $y idiv $x)

 saxon8q div.xq
<?xml version="1.0" encoding="UTF-8"?>10 9



not for any values at all if you are a strict typing sort of person, as
floor returns an xs:decimal (as integer div integer is decimal) and idiv
returns an integer.

(oops sorry about the xquery:-)

David

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