- updated the OpenMesh tutorials to be OM 3 compliant

- added all the tutorials except "Using IO::Options" as unittests

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@968 fdac6126-5c0c-442c-9429-916003d36597

src/Unittests/int2roman.hh

@@ -0,0 +1,43 @@
+#ifndef INT2ROMAN_HH
+#define INT2ROMAN_HH
+
+#include <string>
+
+std::string int2roman( size_t decimal, size_t length = 30 )
+{
+  assert( decimal > 0 && decimal < 1000 );
+
+  const size_t nrows = 4;
+  const size_t ncols = 4;
+
+  static size_t table_arabs[ nrows ][ ncols ] = { { 1000, 1000, 1000, 1000 },
+                                                  {  900,  500,  400,  100 },
+                                                  {   90,   50,   40,   10 },
+                                                  {    9,    5,    4,    1 } };
+
+  static const char *table_romans[ nrows ][ ncols ] = { {  "M",  "M",  "M", "M" },
+                                                  { "CM",  "D", "CD", "C" },
+                                                  { "XC",  "L", "XL", "X" },
+                                                  { "IX",  "V", "IV", "I" } };
+
+  size_t power;	// power of ten
+  size_t index;  // Indexes thru values to subtract
+
+  std::string roman;
+
+  roman.reserve(length);
+
+  roman[ 0 ] = '\0';
+
+  for ( power = 0; power < nrows; power++ )
+    for ( index = 0; index < ncols; index++ )
+	while ( decimal >= table_arabs[ power ][ index ] )
+        {
+	   roman   += table_romans[ power ][ index ];
+	   decimal -= table_arabs[ power ][ index ];
+	}
+
+  return roman;
+}
+
+#endif