Coding - GeomTools performance update #19

Update size of buffer for the brep parsing according standard

src/GeomTools/GeomTools.cxx

@@ -100,12 +100,17 @@ void GeomTools::GetReal(Standard_IStream& IS,Standard_Real& theValue)
 {
   theValue = 0.;
   if (IS.eof())
+  {
     return;
-
+  }
-  char buffer[256];
+  // According IEEE-754 Specification and standard stream parameters
-  buffer[0] = '\0';
+  // the most optimal buffer length not less then 25
-  std::streamsize anOldWide = IS.width(256);
+  constexpr size_t THE_BUFFER_SIZE = 32;
-  IS >> buffer;
+  char             aBuffer[THE_BUFFER_SIZE];
-  IS.width(anOldWide);
+
-  theValue = Strtod(buffer, NULL);
+  aBuffer[0]                = '\0';
+  std::streamsize anOldWide = IS.width(THE_BUFFER_SIZE - 1);
+  IS >> aBuffer;
+  IS.width(anOldWide);
+  theValue = Strtod(aBuffer, nullptr);
 }