[Libreoffice-commits] core.git: sc/source

[Tor Lillqvist]

 sc/source/core/inc/arraysumfunctor.hxx |   22 ++++++++++++++++++++++
 sc/source/core/tool/interpr6.cxx       |   10 ++++++++++
 2 files changed, 32 insertions(+)

New commits:
commit 4d67506dee347c3a3a290e1f52af91048c4318bc
Author: Tor Lillqvist <tml at collabora.com>
Date:   Fri Feb 5 14:58:11 2016 +0200

    tdf#97587: Treat plain NaNs as zero in the software interpreter for SUM
    
    The NaNs that have been stored in the arrays by
    ScColumn::FetchVectorRefArray() and other code correspond to empty
    cells. For the purpose of SUM they should be treated as zero.
    
    Change-Id: I8ac0c8afdf71da415ed120f9f8f6d51a8b5edb15

diff --git a/sc/source/core/inc/arraysumfunctor.hxx b/sc/source/core/inc/arraysumfunctor.hxx
index 200fdc6..3955fd9 100644
--- a/sc/source/core/inc/arraysumfunctor.hxx
+++ b/sc/source/core/inc/arraysumfunctor.hxx
@@ -12,6 +12,7 @@
 #define INCLUDED_SC_SOURCE_CORE_INC_ARRAYSUMFUNCTOR_HXX
 
 #include <cstdint>
+#include <rtl/math.hxx>
 #include <tools/cpuid.hxx>
 
 #if defined(LO_SSE2_AVAILABLE)
@@ -65,6 +66,27 @@ public:
         for (; i < mnSize; ++i)
             fSum += mpArray[i];
 
+        // If the sum is a NaN, some of the terms were empty cells, probably.
+        // Re-calculate, carefully
+        if (!rtl::math::isFinite(fSum))
+        {
+            sal_uInt32 nErr = reinterpret_cast< sal_math_Double * >(&fSum)->nan_parts.fraction_lo;
+            if (nErr & 0xffff0000)
+            {
+                fSum = 0;
+                for (i = 0; i < mnSize; i++)
+                {
+                    if (!rtl::math::isFinite(mpArray[i]))
+                    {
+                        nErr = reinterpret_cast< const sal_math_Double * >(&mpArray[i])->nan_parts.fraction_lo;
+                        if (!(nErr & 0xffff0000))
+                            fSum += mpArray[i]; // Let errors encoded as NaNs propagate ???
+                    }
+                    else
+                        fSum += mpArray[i];
+                }
+            }
+        }
         return fSum;
     }
 
diff --git a/sc/source/core/tool/interpr6.cxx b/sc/source/core/tool/interpr6.cxx
index 27d88c8..306d81f 100644
--- a/sc/source/core/tool/interpr6.cxx
+++ b/sc/source/core/tool/interpr6.cxx
@@ -412,6 +412,16 @@ void IterateMatrix(
         case ifSUM:
         {
             ScMatrix::IterateResult aRes = pMat->Sum(bTextAsZero);
+            // If the first value is a NaN, it probably means it was an empty cell,
+            // and should be treated as zero.
+            if ( !rtl::math::isFinite(aRes.mfFirst) )
+            {
+                sal_uInt32 nErr = reinterpret_cast< sal_math_Double * >(&aRes.mfFirst)->nan_parts.fraction_lo;
+                if (nErr & 0xffff0000)
+                {
+                    aRes.mfFirst = 0;
+                }
+            }
             if ( fMem )
                 fRes += aRes.mfFirst + aRes.mfRest;
             else