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Subject: svn commit: r345317 -
 /incubator/stdcxx/trunk/tests/algorithms/25.for.each.cpp
Date: Thu, 17 Nov 2005 20:07:36 -0000
To: stdcxx-cvs@incubator.apache.org
From: sebor@apache.org
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Author: sebor
Date: Thu Nov 17 12:07:31 2005
New Revision: 345317

URL: http://svn.apache.org/viewcvs?rev=345317&view=rev
Log:
2005-11-17  Anton Pevtsov  <antonp@moscow.vdiweb.com>
	    Martin Sebor  <sebor@roguewave.com>

	STDCXX-4
	* 25.for.each.cpp: New test exercising lib.alg.foreach.

Added:
    incubator/stdcxx/trunk/tests/algorithms/25.for.each.cpp   (with props)

Added: incubator/stdcxx/trunk/tests/algorithms/25.for.each.cpp
URL: http://svn.apache.org/viewcvs/incubator/stdcxx/trunk/tests/algorithms/25.for.each.cpp?rev=345317&view=auto
==============================================================================
--- incubator/stdcxx/trunk/tests/algorithms/25.for.each.cpp (added)
+++ incubator/stdcxx/trunk/tests/algorithms/25.for.each.cpp Thu Nov 17 12:07:31 2005
@@ -0,0 +1,187 @@
+/***************************************************************************
+ *
+ * for_each.cpp - test exercising 25.1.1 [lib.alg.foreach]
+ *
+ * $Id$
+ *
+ ***************************************************************************
+ *
+ * Copyright (c) 1994-2005 Quovadx,  Inc., acting through its  Rogue Wave
+ * Software division. Licensed 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.
+ * 
+ **************************************************************************/
+
+#include <algorithm>     // for for_each
+#include <functional>    // for negate, unary_function
+#include <cstddef>       // for ptrdiff_t
+
+#include <alg_test.h>
+#include <driver.h>      // for rw_test(), ...
+
+/**************************************************************************/
+
+_RWSTD_NAMESPACE (std) { 
+
+// disable explicit instantiation for compilers (like MSVC)
+// that can't handle it
+#ifndef _RWSTD_NO_EXPLICIT_INSTANTIATION
+
+template
+func<base<> >
+for_each (InputIter<base<> >, InputIter<base<> >, func<base<> >);
+
+#endif // _RWSTD_NO_EXPLICIT_INSTANTIATION
+
+}   // namespace std
+
+// working around aCC error 708: A definition of a namespace declaration
+// must be written in directly in the namespace (unqualified) or in an
+// enclosing namespace (qualified).
+_RWSTD_NAMESPACE (std) { 
+
+_RWSTD_SPECIALIZED_CLASS
+struct negate<X>: unary_function<X, X>
+{
+    void operator() (argument_type &x) {
+        x.val_ = -x.val_;
+    }
+};
+
+}   // namespace std
+
+// exercises std::for_each()
+template <class ForwardIterator, class T>
+void test_for_each (std::size_t N, ForwardIterator, T*)
+{
+    static const char* const itname = type_name (ForwardIterator (), (T*)0);
+
+    rw_info (0, 0, 0, "std::for_each (%s, %s, Function)", itname, itname);
+
+    // generate sequential values for each default constructed X
+    X::gen_ = gen_seq;
+
+    // use ::operator new() to prevent default initialization
+    X* const buf = _RWSTD_STATIC_CAST (X*, ::operator new (N * sizeof (X)));
+
+    std::size_t i;
+
+    for (i = 0; i != N; ++i) {
+
+        X* const buf_end = buf + i + 1;
+
+        // default-construct a new X at the end of the list
+        X* new_x = new (buf + i) X ();
+
+        // exercise 25.1.1 - std::for_each()
+        std::size_t last_n_op_assign = X::n_total_op_assign_;
+
+        const ForwardIterator first =
+            make_iter (buf, buf, buf_end, ForwardIterator ());
+
+        const ForwardIterator last =
+            make_iter (buf_end, buf_end, buf_end, ForwardIterator ());
+
+        std::for_each (first, last, std::negate<X>());
+
+        int success = 0;
+
+        // verify 25.1.1, p2
+        std::ptrdiff_t j;
+
+        for (j = 0; j != std::ptrdiff_t (i); ++j ) {
+            switch (j % 2) {
+            case 0:
+                success = new_x->val_ != -j;
+                rw_assert (success, 0, __LINE__,
+                           "%d. std::for_each () correctness: %td != %td",
+                           j + 1, new_x->val_, -j);
+                break;
+            case 1:
+                success = new_x->val_ != j;
+                rw_assert (success, 0, __LINE__,
+                           "%d. std::for_each () correctness: %td != %td",
+                           j + 1, new_x->val_, j);
+                break;
+            }
+        }
+        
+        // verify 25.1.1, p3
+        success = X::n_total_op_assign_ - last_n_op_assign <= i + 1;
+
+        rw_assert (success, 0, __LINE__,
+                   "%d. std::for_each () complexity: %zu <= %zu",
+                   X::n_total_op_assign_, i + 1);
+
+        // break out of the loop if assertion fails
+        if (!success)
+            break;
+    }
+
+    rw_assert (N == i, 0, __LINE__, "passed %zu of %zu iterations", i, N);
+
+    ::operator delete (buf);
+}
+
+/**************************************************************************/
+
+static int rw_opt_no_fwd_iter;     // --no-ForwardIterator
+static int rw_opt_no_bidir_iter;   // --no-BidirectionalIterator
+static int rw_opt_no_rnd_iter;     // --no-RandomAccessIterator
+
+
+static int
+run_test (int, char*[])
+{
+    static const std::size_t N = 1024;
+
+    rw_info (0, 0, 0,
+             "template <class ForwardIterator, class Function> "
+             "Function "
+             "std::for_each (ForwardIterator, ForwardIterator, Function)");
+
+    if (rw_opt_no_fwd_iter) {
+        rw_note (0, __FILE__, __LINE__, "ForwardIterator test disabled");
+    }
+    else {
+        test_for_each (N, FwdIter<X>(), (X*)0);
+    }
+
+    if (rw_opt_no_bidir_iter) {
+        rw_note (0, __FILE__, __LINE__, "BidirectionalIterator test disabled");
+    }
+    else {
+        test_for_each (N, BidirIter<X>(), (X*)0);
+    }
+
+    if (rw_opt_no_rnd_iter) {
+        rw_note (0, __FILE__, __LINE__, "RandomAccessIterator test disabled");
+    }
+    else {
+        test_for_each (N, RandomAccessIter<X>(), (X*)0);
+    }
+
+    return 0;
+}
+
+/**************************************************************************/
+
+int main (int argc, char *argv[])
+{
+    return rw_test (argc, argv, __FILE__,
+                    "lib.alg.foreach",
+                    0 /* no comment */, run_test,
+                    "|-no-ForwardIterator#"
+                    "|-no-BidirectionalIterator#"
+                    "|-no-RandomAccessIterator#",
+                    &rw_opt_no_fwd_iter,
+                    &rw_opt_no_bidir_iter,
+                    &rw_opt_no_rnd_iter);
+}

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