fdo#81356: convert Fraction to boost::rational<long> - wip

* Added rational util functions used by Fraction class not
  available in the boost::rational class.
* Replaced usage of Fraction by boost::rational<long>
* Removed code that relies on:
  1. fraction.IsValid() -- rational only allow valid values, ie
     denominator() != 0
  2. rational.denominator() == 0 -- always false
  3. rational.denominator() < 0 -- always false but implementation
     detail: http://www.boost.org/doc/libs/release/libs/rational/rational.html#Internal%20representation
* Simplified code that relies on:
  1. rational.denominator() != 0 -- always true
* BUGS EXIST because Fraction allows the creation of invalid values but
  boost::rational throws the exception boost::bad_rational

Change-Id: I84970a4956afb3f91ac0c8f726547466319420f9
Reviewed-on: https://gerrit.libreoffice.org/11551
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/filter/source/msfilter/svdfppt.cxx b/filter/source/msfilter/svdfppt.cxx
index e4c54f028c43..b6300bb03d38 100644
--- a/filter/source/msfilter/svdfppt.cxx
+++ b/filter/source/msfilter/svdfppt.cxx
@@ -2470,9 +2470,9 @@ Size SdrPowerPointImport::GetPageSize() const
         long nInchMul = 1, nInchDiv = 1;
         if ( bInch )
         {   // temporarily convert size (for rounding it) from inch to metric units
-            Fraction aFact(GetMapFactor(eMap,MAP_100TH_MM).X());
-            nInchMul = aFact.GetNumerator();
-            nInchDiv = aFact.GetDenominator();
+            boost::rational<long> aFact = GetMapFactor(eMap,MAP_100TH_MM).X();
+            nInchMul = aFact.numerator();
+            nInchDiv = aFact.denominator();
             aRet.Width() = BigMulDiv( aRet.Width(), nInchMul, nInchDiv );
             aRet.Height() = BigMulDiv( aRet.Height(), nInchMul, nInchDiv );
         }