2 files changed, 5 insertions, 3 deletions
diff --git a/starmath/source/node.cxx b/starmath/source/node.cxx
index 3c78de3ba5b0..9408e62dbdfa 100644
--- a/starmath/source/node.cxx
+++ b/starmath/source/node.cxx
@@ -39,6 +39,7 @@
 #include <rtl/math.hxx>
 
 #include <cassert>
+#include <cstdlib>
 #include <math.h>
 #include <memory>
 #include <float.h>
@@ -871,7 +872,7 @@ bool IsPointInLine(const Point &rPoint1,
     static const double eps = 5.0 * DBL_EPSILON;
 
     double fLambda;
-    if (labs(rHeading2.X()) > labs(rHeading2.Y()))
+    if (std::abs(rHeading2.X()) > std::abs(rHeading2.Y()))
     {
         fLambda = (rPoint1.X() - rPoint2.X()) / static_cast<double>(rHeading2.X());
         bRes = fabs(rPoint1.Y() - (rPoint2.Y() + fLambda * rHeading2.Y())) < eps;
diff --git a/starmath/source/rect.cxx b/starmath/source/rect.cxx
index 1c9ecb71ccdc..e3506c67de77 100644
--- a/starmath/source/rect.cxx
+++ b/starmath/source/rect.cxx
@@ -30,6 +30,7 @@
 #include <smmod.hxx>
 
 #include <cassert>
+#include <cstdlib>
 
 namespace {
 
@@ -588,8 +589,8 @@ tools::Long SmRect::OrientedDist(const Point &rPoint) const
     // build distance vector
     Point  aDist (aRef - rPoint);
 
-    tools::Long nAbsX = labs(aDist.X()),
-         nAbsY = labs(aDist.Y());
+    tools::Long nAbsX = std::abs(aDist.X()),
+         nAbsY = std::abs(aDist.Y());
 
     return bIsInside ? - std::min(nAbsX, nAbsY) : std::max (nAbsX, nAbsY);
 }