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extern/stdcxx/4.2.1/examples/manual/bitset.cpp

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+/**************************************************************************
+ *
+ * bitset.cpp - Example program for bitset.
+ *
+ * $Id: bitset.cpp 648752 2008-04-16 17:01:56Z faridz $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <bitset>     // for bitset
+#include <iostream>   // for cout, endl
+
+#include <examples.h>
+
+int main ()
+{
+    // Construct a bitset with 40 elements all initialized to 0.
+    std::bitset<40> b;
+
+    // Bitwise OR the bitset with 5.
+    b |= 5;
+
+    // Write bitset to the standard output.
+    std::cout << "         4....:....3....:....2....:....1....:....0\n"
+              << "b = 5:    " << b << '\n';
+
+    // Invert the bitset.
+    b = ~b;
+
+    std::cout << "b = ~b:   " << b << '\n'
+              << "b <<= " << b.count () << ": ";
+
+    // Shift the bitset left by the number of bits set.
+    b <<= b.count ();
+
+    // Convert it to a string and write it out again.
+    std::cout << b.to_string () << '\n';
+
+    // Return 0 on success.
+    return !(1 == b.count () && 1UL == (b >> (b.size () - 1)).to_ulong ());
+}