setting default export precision to 17 for all exporters

code/StepExporter.cpp

@@ -146,6 +146,7 @@ StepExporter::StepExporter(const aiScene* pScene, IOSystem* pIOSystem, const std
 
     // make sure that all formatting happens using the standard, C locale and not the user's current locale
     mOutput.imbue( std::locale("C") );
+    mOutput.precision(17);
 
     // start writing
     WriteFile();
@@ -158,7 +159,9 @@ void StepExporter::WriteFile()
     // see http://shodhganga.inflibnet.ac.in:8080/jspui/bitstream/10603/14116/11/11_chapter%203.pdf
     // note, that all realnumber values must be comma separated in x files
     mOutput.setf(std::ios::fixed);
-    mOutput.precision(16); // precission for double
+    // precission for double
+    // see http://stackoverflow.com/questions/554063/how-do-i-print-a-double-value-with-full-precision-using-cout
+    mOutput.precision(17);
 
     // standard color
     aiColor4D fColor;
@@ -365,4 +368,3 @@ void StepExporter::WriteFile()
 
 #endif
 #endif
-