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diff --git a/build_mingw64/objstore/amscppimglib4_amsbitplane.o b/build_mingw64/objstore/amscppimglib4_amsbitplane.o
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diff --git a/build_mingw64/objstore/amscppimglib4_amsfloatimage.o b/build_mingw64/objstore/amscppimglib4_amsfloatimage.o
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diff --git a/build_mingw64/objstore/amscppimglib4_amspixel.o b/build_mingw64/objstore/amscppimglib4_amspixel.o
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diff --git a/build_mingw64/objstore/amscppimglib4_intlutil.o b/build_mingw64/objstore/amscppimglib4_intlutil.o
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diff --git a/build_mingw64/objstore/amscppimglib4_tests.o b/build_mingw64/objstore/amscppimglib4_tests.o
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diff --git a/build_mingw64/tests.exe b/build_mingw64/tests.exe
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diff --git a/include/amscppimglib4/amscppimglib4.hpp b/include/amscppimglib4/amscppimglib4.hpp
index fd2621a..3b43460 100644
--- a/include/amscppimglib4/amscppimglib4.hpp
+++ b/include/amscppimglib4/amscppimglib4.hpp
@@ -205,6 +205,14 @@ namespace ams
 
         // //rescales the image with linear interpolation
         amsfloatimage rescale(int nnx, int nny);
+
+        //addition/subtraction/scaling operators?
+        // amsfloatimage operator+(const amsfloatimage &rhs);
+        // amsfloatimage operator-(const amsfloatimage &rhs);
+        // friend amsfloatimage operator-(const amsfloatimage &rhs);
+        // amsfloatimage operator*(float rhs);
+        // amsfloatimage operator/(float rhs;
+
     };
 
 
diff --git a/include/amscppimglib4/amscppimglib4_tests.hpp b/include/amscppimglib4/amscppimglib4_tests.hpp
index c6d2524..8fb5acb 100644
--- a/include/amscppimglib4/amscppimglib4_tests.hpp
+++ b/include/amscppimglib4/amscppimglib4_tests.hpp
@@ -6,6 +6,8 @@ namespace ams
     void amscppimglib4_test1();
     void amscppimglib4_test2();
 
+    void amscppimglib4_test3();
+
 }; //end namespace ams
 
 #endif