Add STLport 5.1.4

[polintos/scott/priv.git] / include / c++ / stl / stl / _hash_fun.h

diff --git a/include/c++/stl/stl/_hash_fun.h b/include/c++/stl/stl/_hash_fun.h
new file mode 100644 (file)
index 0000000..b069ff0
--- /dev/null
+++ b/include/c++/stl/stl/_hash_fun.h
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 1996-1998
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Silicon Graphics makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ *
+ * Copyright (c) 1994
+ * Hewlett-Packard Company
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Hewlett-Packard Company makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ */
+
+/* NOTE: This is an internal header file, included by other STL headers.
+ *   You should not attempt to use it directly.
+ */
+
+#ifndef _STLP_HASH_FUN_H
+#define _STLP_HASH_FUN_H
+
+#ifndef _STLP_INTERNAL_CSTDDEF
+#  include <stl/_cstddef.h>
+#endif
+
+_STLP_BEGIN_NAMESPACE
+
+template <class _Key> struct hash { };
+
+_STLP_MOVE_TO_PRIV_NAMESPACE
+
+inline size_t __stl_hash_string(const char* __s) {
+  _STLP_FIX_LITERAL_BUG(__s)
+  unsigned long __h = 0;
+  for ( ; *__s; ++__s)
+    __h = 5*__h + *__s;
+
+  return size_t(__h);
+}
+
+_STLP_MOVE_TO_STD_NAMESPACE
+
+_STLP_TEMPLATE_NULL
+struct hash<char*> {
+  size_t operator()(const char* __s) const {
+    _STLP_FIX_LITERAL_BUG(__s)
+    return _STLP_PRIV __stl_hash_string(__s);
+  }
+};
+
+_STLP_TEMPLATE_NULL
+struct hash<const char*> {
+  size_t operator()(const char* __s) const {
+    _STLP_FIX_LITERAL_BUG(__s)
+    return _STLP_PRIV __stl_hash_string(__s);
+  }
+};
+
+_STLP_TEMPLATE_NULL struct hash<char> {
+  size_t operator()(char __x) const { return __x; }
+};
+_STLP_TEMPLATE_NULL struct hash<unsigned char> {
+  size_t operator()(unsigned char __x) const { return __x; }
+};
+#if !defined (_STLP_NO_SIGNED_BUILTINS)
+_STLP_TEMPLATE_NULL struct hash<signed char> {
+  size_t operator()(unsigned char __x) const { return __x; }
+};
+#endif
+_STLP_TEMPLATE_NULL struct hash<short> {
+  size_t operator()(short __x) const { return __x; }
+};
+_STLP_TEMPLATE_NULL struct hash<unsigned short> {
+  size_t operator()(unsigned short __x) const { return __x; }
+};
+_STLP_TEMPLATE_NULL struct hash<int> {
+  size_t operator()(int __x) const { return __x; }
+};
+
+#if defined (_WIN64) || !defined (_STLP_MSVC) || (_STLP_MSVC < 1300)
+_STLP_TEMPLATE_NULL struct hash<unsigned int> {
+  size_t operator()(unsigned int __x) const { return __x; }
+};
+#else
+/* MSVC .Net since 2002 has a 64 bits portability warning feature. typedef
+ * like size_t are tagged as potential 64 bits variables making them different from
+ * unsigned int. To avoid the warning when a hash container is instanciated with
+ * the size_t key we prefer to grant the size_t specialization rather than the
+ * unsigned int one.
+ */
+_STLP_TEMPLATE_NULL struct hash<size_t> {
+  size_t operator()(size_t __x) const { return __x; }
+};
+#endif
+
+_STLP_TEMPLATE_NULL struct hash<long> {
+  size_t operator()(long __x) const { return __x; }
+};
+_STLP_TEMPLATE_NULL struct hash<unsigned long> {
+  size_t operator()(unsigned long __x) const { return __x; }
+};
+
+#if defined (_STLP_LONG_LONG)
+_STLP_TEMPLATE_NULL struct hash<_STLP_LONG_LONG> {
+  size_t operator()(_STLP_LONG_LONG x) const { return (size_t)x; }
+};
+_STLP_TEMPLATE_NULL struct hash<unsigned _STLP_LONG_LONG> {
+  size_t operator()(unsigned _STLP_LONG_LONG x) const { return (size_t)x; }
+};
+#endif
+
+_STLP_TEMPLATE_NULL
+struct hash<void *>
+{
+    union __vp {
+        size_t s;
+        void  *p;
+    };
+
+    size_t operator()(void *__x) const
+      {
+        __vp vp;
+        vp.p = __x;
+        return vp.s;
+      }
+};
+
+_STLP_END_NAMESPACE
+
+#endif /* _STLP_HASH_FUN_H */
+
+// Local Variables:
+// mode:C++
+// End: