diff --git a/EXE_GdbCreateCurve.cpp b/EXE_GdbCreateCurve.cpp
index 0ed482c..0221ab9 100644
--- a/EXE_GdbCreateCurve.cpp
+++ b/EXE_GdbCreateCurve.cpp
@@ -1295,13 +1295,13 @@ ExeCreateCurveFillet( int nParentId, int nCrv1, const Point3d& ptNear1,
       if ( dTrim1 > EPS_ZERO)
          pCrv1->TrimStartAtParam( dTrim1) ;
       else if ( dTrim1 < - EPS_ZERO)
-         pCrv1->TrimEndAtParam( fabs( dTrim1)) ;
+         pCrv1->TrimEndAtParam( abs( dTrim1)) ;
      // recupero e aggiusto la seconda curva
       ICurve* pCrv2 = GetCurve( pGeomDB->GetGeoObj( nCrv2)) ;
       if ( dTrim2 > EPS_ZERO)
          pCrv2->TrimStartAtParam( dTrim2) ;
       else if ( dTrim2 < - EPS_ZERO)
-         pCrv2->TrimEndAtParam( fabs( dTrim2)) ;
+         pCrv2->TrimEndAtParam( abs( dTrim2)) ;
    }
    ExeSetModified() ;
   // se richiesto, salvo il comando Lua equivalente
@@ -1359,13 +1359,13 @@ ExeCreateCurveChamfer( int nParentId, int nCrv1, const Point3d& ptNear1,
       if ( dTrim1 > EPS_ZERO)
          pCrv1->TrimStartAtParam( dTrim1) ;
       else if ( dTrim1 < - EPS_ZERO)
-         pCrv1->TrimEndAtParam( fabs( dTrim1)) ;
+         pCrv1->TrimEndAtParam( abs( dTrim1)) ;
      // recupero e aggiusto la seconda curva
       ICurve* pCrv2 = GetCurve( pGeomDB->GetGeoObj( nCrv2)) ;
       if ( dTrim2 > EPS_ZERO)
          pCrv2->TrimStartAtParam( dTrim2) ;
       else if ( dTrim2 < - EPS_ZERO)
-         pCrv2->TrimEndAtParam( fabs( dTrim2)) ;
+         pCrv2->TrimEndAtParam( abs( dTrim2)) ;
    }
    ExeSetModified() ;
   // se richiesto, salvo il comando Lua equivalente
@@ -1581,7 +1581,7 @@ MyCreateCurveCompo( int nParentId, const INTVECTOR& vIds, bool bErase)
       if ( pCopCrv->GetExtrusion( vtTemp)) {
          vtExtr = vtTemp ;
          double dTemp ;
-         if ( pCopCrv->GetThickness( dTemp)  &&  fabs( dTemp) > fabs( dThick))
+         if ( pCopCrv->GetThickness( dTemp)  &&  abs( dTemp) > abs( dThick))
             dThick = dTemp ;
       }
      // aggiungo alla composita
@@ -1707,7 +1707,7 @@ MyCreateCurveCompoByChain( int nParentId, const INTVECTOR& vIds,
             if ( vtExtr.IsSmall())
                vtExtr = vtTemp ;
             double dTemp ;
-            if ( pCopCrv->GetThickness( dTemp)  &&  fabs( dTemp) > fabs( dThick))
+            if ( pCopCrv->GetThickness( dTemp)  &&  abs( dTemp) > abs( dThick))
                dThick = dTemp ;
          }
         // la aggiungo alla curva composta
diff --git a/EXE_GdbCreateSurf.cpp b/EXE_GdbCreateSurf.cpp
index 15c071b..2987f80 100644
--- a/EXE_GdbCreateSurf.cpp
+++ b/EXE_GdbCreateSurf.cpp
@@ -59,7 +59,7 @@ ExeCreateSurfFrRectangle( int nParentId, const Point3d& ptIni, const Point3d& pt
    double dWidth = ptCrossI.x ;
    double dLen = ptCrossI.y ;
   // creo il rettangolo nel suo riferimento intrinseco
-   PtrOwner<ISurfFlatRegion> pSfr( GetSurfFlatRegionRectangle( fabs( dWidth), dLen)) ;
+   PtrOwner<ISurfFlatRegion> pSfr( GetSurfFlatRegionRectangle( abs( dWidth), dLen)) ;
    bOk = bOk && ! IsNull( pSfr) ;
   // eventuale traslazione per larghezza negativa
    if ( bOk  &&  dWidth < 0)
@@ -109,7 +109,7 @@ ExeCreateSurfFrRectangle3P( int nParentId, const Point3d& ptIni,
    double dWidth = ptCrossI.x ;
    double dLen = ptCrossI.y ;
   // creo il rettangolo nel suo riferimento intrinseco
-   PtrOwner<ISurfFlatRegion> pSfr( GetSurfFlatRegionRectangle( fabs( dWidth), dLen)) ;
+   PtrOwner<ISurfFlatRegion> pSfr( GetSurfFlatRegionRectangle( abs( dWidth), dLen)) ;
    bOk = bOk && ! IsNull( pSfr) ;
   // eventuale traslazione per larghezza negativa
    if ( bOk  &&  dWidth < 0)
@@ -159,7 +159,7 @@ ExeCreateSurfFrStadium( int nParentId, const Point3d& ptIni, const Point3d& ptCr
    double dWidth = ptCrossI.x ;
    double dLen = ptCrossI.y ;
   // creo lo stadium nel suo riferimento intrinseco
-   PtrOwner<ISurfFlatRegion> pSfr( GetSurfFlatRegionStadium( fabs( dWidth), dLen)) ;
+   PtrOwner<ISurfFlatRegion> pSfr( GetSurfFlatRegionStadium( abs( dWidth), dLen)) ;
    bOk = bOk && ! IsNull( pSfr) ;
   // eventuale traslazione per larghezza negativa
    if ( bOk  &&  dWidth < 0)
@@ -655,7 +655,7 @@ ExeCreateSurfTmBox( int nParentId, const Point3d& ptIni, const Point3d& ptCross,
    double dWidth = ptCrossI.x ;
    double dLen = ptCrossI.y ;
   // creo il box nel suo riferimento intrinseco
-   PtrOwner<ISurfTriMesh> pSTM( GetSurfTriMeshBox( fabs( dWidth), dLen, dHeight)) ;
+   PtrOwner<ISurfTriMesh> pSTM( GetSurfTriMeshBox( abs( dWidth), dLen, dHeight)) ;
    bOk = bOk && ! IsNull( pSTM) ;
   // eventuale traslazione per larghezza negativa
    if ( bOk  &&  dWidth < 0)
@@ -712,7 +712,7 @@ ExeCreateSurfTmPyramid( int nParentId, const Point3d& ptIni, const Point3d& ptCr
    double dWidth = ptCrossI.x ;
    double dLen = ptCrossI.y ;
   // creo la piramide nel suo riferimento intrinseco
-   PtrOwner<ISurfTriMesh> pSTM( GetSurfTriMeshPyramid( fabs( dWidth), dLen, dHeight)) ;
+   PtrOwner<ISurfTriMesh> pSTM( GetSurfTriMeshPyramid( abs( dWidth), dLen, dHeight)) ;
    bOk = bOk && ! IsNull( pSTM) ;
   // eventuale traslazione per larghezza negativa
    if ( bOk  &&  dWidth < 0)
diff --git a/EXE_NstBoxNesting.cpp b/EXE_NstBoxNesting.cpp
index 8309c2b..04b7211 100644
--- a/EXE_NstBoxNesting.cpp
+++ b/EXE_NstBoxNesting.cpp
@@ -121,7 +121,7 @@ ExePackBox( int nId, double dXmin, double dYmin, double dXmax, double dYmax, dou
       sort( vY.begin(), vY.end(), greater<double>()) ;
    }
   // Elimino i valori coincidenti
-   vY.erase( unique( vY.begin(), vY.end(), [](double a, double b){ return fabs( a - b) < EPS_SMALL ;}), vY.end()) ;
+   vY.erase( unique( vY.begin(), vY.end(), [](double a, double b){ return abs( a - b) < EPS_SMALL ;}), vY.end()) ;
   // Testo le Y in ordine opportuno
    bool bFound = false ;
    double dXok = INFINITO, dYok = INFINITO ;
@@ -232,7 +232,7 @@ ExePackBoxCluster( const INTVECTOR& vIds, double dXmin, double dYmin, double dXm
       sort( vY.begin(), vY.end(), greater<double>()) ;
    }
   // Elimino i valori coincidenti
-   vY.erase( unique( vY.begin(), vY.end(), [](double a, double b){ return fabs( a - b) < EPS_SMALL ;}), vY.end()) ;
+   vY.erase( unique( vY.begin(), vY.end(), [](double a, double b){ return abs( a - b) < EPS_SMALL ;}), vY.end()) ;
   // Testo le Y in ordine opportuno
    bool bFound = false ;
    double dXok = INFINITO, dYok = INFINITO ;
@@ -446,7 +446,7 @@ ExeMoveBoxCluster( const INTVECTOR& vIds, Vector3d& vtMove,
       nId2 = ( bInRoot ? ExeGetNextPart( nId2, true) : ExeGetNextGroup( nId2)) ;
    }
   // Ordino questi box in senso contrario al movimento
-   if ( fabs( vtMoveXY.x) >= fabs( vtMoveXY.y)) {
+   if ( abs( vtMoveXY.x) >= abs( vtMoveXY.y)) {
       if ( vtMoveXY.x > 0)
         // movimento prevalente in X+ -> ordine secondo X decrescente
          sort( vBox.begin(), vBox.end(), []( const BBox3d& a, const BBox3d& b)
diff --git a/EXE_NstCreateFlatParts.cpp b/EXE_NstCreateFlatParts.cpp
index 3046363..5e118ac 100644
--- a/EXE_NstCreateFlatParts.cpp
+++ b/EXE_NstCreateFlatParts.cpp
@@ -234,7 +234,7 @@ CreateFlatPartsByRegions( int nLay)
       else {
          double dArea ;
          pCrv->GetAreaXY( dArea) ;
-         if ( fabs( dArea) > 1) {
+         if ( abs( dArea) > 1) {
             if ( dArea < 0) {
                pCrv->Invert() ;
                dArea = - dArea ;
@@ -248,7 +248,7 @@ CreateFlatPartsByRegions( int nLay)
    }
   // ordino le aree in senso decrescente
    sort( vArea.begin(), vArea.end(), 
-         []( const INTDBL& a, const INTDBL&b) { return fabs( a.second) > fabs( b.second) ; }) ;
+         []( const INTDBL& a, const INTDBL&b) { return abs( a.second) > abs( b.second) ; }) ;
   // creo i pezzi a partire dalle curve chiuse più grandi e dalle curve che vi sono contenute
    for ( int i = 0 ; i < int( vArea.size()) ; ++ i) {
       if ( vArea[i].first == GDB_ID_NULL)
diff --git a/EXE_NstPartNesting.cpp b/EXE_NstPartNesting.cpp
index 66febe6..230cc18 100644
--- a/EXE_NstPartNesting.cpp
+++ b/EXE_NstPartNesting.cpp
@@ -1659,7 +1659,7 @@ MyRotatePartCluster( IGeomDB* pGeomDB, const INTVECTOR& vTrueIds, BBox3d& b3Clus
 
   // Se movimento risultante nullo, non faccio alcunché
    dRotAngDeg = dAng ;
-   if ( fabs( dAng) < EPS_ANG_SMALL)
+   if ( abs( dAng) < EPS_ANG_SMALL)
       return true ;
 
   // Eseguo rotazione dei pezzi del cluster
@@ -1753,7 +1753,7 @@ ExeAlignPartClusterOnCollision( const INTVECTOR& vIds, bool bReducedCut, bool& b
    double dU ;
    if ( ! pCrv->GetParamAtPoint( ptCntL, dU, 10 * EPS_SMALL))
       return false ;
-   if ( fabs( dU - round( dU)) < 100 * EPS_PARAM)
+   if ( abs( dU - round( dU)) < 100 * EPS_PARAM)
       dU = round( dU) ;
    Point3d ptPp ;
    Vector3d vtTp ;
@@ -1780,7 +1780,7 @@ ExeAlignPartClusterOnCollision( const INTVECTOR& vIds, bool bReducedCut, bool& b
    Point3d ptCen = s_scInfo.ptP1 ;
    if ( ! ExeRotatePartCluster( vIds, bReducedCut, ptCen, dRotAngDeg))
       return false ;
-   bMoved = ( fabs( dRotAngDeg) > 100.0 * EPS_ANG_ZERO) ;
+   bMoved = ( abs( dRotAngDeg) > 100.0 * EPS_ANG_ZERO) ;
    return true ;
 }
 
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index 1f2f60a..469e9c0 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ
diff --git a/LUA_GeoSnap.cpp b/LUA_GeoSnap.cpp
index 8261ab3..f470135 100644
--- a/LUA_GeoSnap.cpp
+++ b/LUA_GeoSnap.cpp
@@ -439,7 +439,7 @@ LuaExtrusionByThickness( lua_State* L)
    Vector3d vtExtr ;
    double dThick ;
    if ( ExeCurveExtrusion( nId, nRefId, vtExtr)  &&  ! vtExtr.IsSmall()  &&
-        ExeCurveThickness( nId, &dThick)  &&  fabs( dThick) > EPS_SMALL)
+        ExeCurveThickness( nId, &dThick)  &&  abs( dThick) > EPS_SMALL)
       vtExtr *= dThick ;
    else
       vtExtr = V_NULL ;