libcxx initial import

llvm-svn: 103490

1 files changed, 85 insertions, 0 deletions

diff --git a/libcxx/test/utilities/memory/ptr.align/align.pass.cpp b/libcxx/test/utilities/memory/ptr.align/align.pass.cpp
new file mode 100644
index 00000000000..85558dafe1e
--- /dev/null
+++ b/libcxx/test/utilities/memory/ptr.align/align.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// ΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// #include <memory>
+
+// void* align(size_t alignment, size_t size, void*& ptr, size_t& space);
+
+#include <memory>
+#include <cassert>
+
+int main()
+{
+    int i = 0;
+    const unsigned N = 20;
+    char buf[N];
+    void* r;
+    void* p = &buf[0];
+    std::size_t s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[0]);
+    assert(r == p);
+    assert(s == N);
+
+    p = &buf[1];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-3);
+
+    p = &buf[2];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-2);
+
+    p = &buf[3];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-1);
+
+    p = &buf[4];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N);
+
+    p = &buf[0];
+    s = N;
+    r = std::align(4, N, p, s);
+    assert(p == &buf[0]);
+    assert(r == p);
+    assert(s == N);
+
+    p = &buf[1];
+    s = N-1;
+    r = std::align(4, N-4, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-4);
+
+    p = &buf[1];
+    s = N-1;
+    r = std::align(4, N-3, p, s);
+    assert(p == &buf[1]);
+    assert(r == nullptr);
+    assert(s == N-1);
+
+    p = &buf[0];
+    s = N;
+    r = std::align(1, N+1, p, s);
+    assert(p == &buf[0]);
+    assert(r == nullptr);
+    assert(s == N);
+}