cmake HAVE_ATANH examples

FreeCAD/FreeCAD src/Mod/Material/App/CMakeLists.txt :2 

add_definitions(-DFCAppMaterial -DHAVE_ACOSH -DHAVE_ASINH -DHAVE_ATANH)

FreeCAD/FreeCAD src/Mod/Material/Gui/CMakeLists.txt :2 

add_definitions(-DHAVE_ACOSH -DHAVE_ATANH -DHAVE_ASINH)