Добавление новых функций, возвращение функций subtract_scaled

basic-geometry/basic-geometry.vcxproj

@@ -24,7 +24,7 @@
     <ClInclude Include="angle.h" />
     <ClInclude Include="basic-geometry.h" />
     <ClInclude Include="complex.h" />
-    <ClInclude Include="dual-scalar.h" />
+    <ClInclude Include="dual-number.h" />
     <ClInclude Include="dual-quaternion.h" />
     <ClInclude Include="dual-vector3.h" />
     <ClInclude Include="matrix2x2.h" />
@@ -47,7 +47,7 @@
     <ClCompile Include="affine3.c" />
     <ClCompile Include="angle.c" />
     <ClInclude Include="complex.c" />
-    <ClCompile Include="dual-scalar.c" />
+    <ClCompile Include="dual-number.c" />
     <ClCompile Include="dual-quaternion.c" />
     <ClCompile Include="dual-vector3.c" />
     <ClCompile Include="position2.c" />

basic-geometry/basic-geometry.vcxproj.filters

@@ -78,7 +78,7 @@
     <ClInclude Include="turn3.h">
       <Filter>Файлы заголовков</Filter>
     </ClInclude>
-    <ClInclude Include="dual-scalar.h">
+    <ClInclude Include="dual-number.h">
       <Filter>Файлы заголовков</Filter>
     </ClInclude>
     <ClInclude Include="slerp3.h">
@@ -137,7 +137,7 @@
     <ClCompile Include="turn3.c">
       <Filter>Исходные файлы</Filter>
     </ClCompile>
-    <ClCompile Include="dual-scalar.c">
+    <ClCompile Include="dual-number.c">
       <Filter>Исходные файлы</Filter>
     </ClCompile>
     <ClCompile Include="slerp3.c">

basic-geometry/complex.c

@@ -60,6 +60,9 @@ extern inline void bgc_fp64_complex_add_scaled(BGC_FP64_Complex* sum, const BGC_