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extern/stdcxx/4.2.1/tests/include/rw_rand.h

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+/************************************************************************
+ *
+ * rw_rand.h - declarations of testsuite random number generators
+ *
+ * $Id: rw_rand.h 453816 2006-10-07 00:12:43Z sebor $
+ *
+ ***************************************************************************
+ *
+ * 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 2005-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#ifndef RW_RAND_H_INCLUDED
+#define RW_RAND_H_INCLUDED
+
+#include <rw/_defs.h>   // for libstd config macros
+#include <testdefs.h>   // for test config macros
+
+// seeds the 32-bit random number generator
+// if the seed is equal UINT32_MAX picks a random value to seed
+// the generator with
+_TEST_EXPORT void
+rw_seed32 (_RWSTD_UINT32_T);
+
+// returns a 32-bit random number in the range [0, limit)
+// if limit is non-zero, otherwise in the range [0, UINT32_MAX)
+_TEST_EXPORT _RWSTD_UINT32_T
+rw_rand32 (_RWSTD_UINT32_T = 0);
+
+#ifdef _RWSTD_UINT64_T
+
+// seeds the 64-bit random number generator
+// if the seed is equal UINT64_MAX picks a random value to seed
+// the generator with
+_TEST_EXPORT void
+rw_seed64 (_RWSTD_UINT64_T);
+
+// returns a 64-bit random number in the range [0, limit)
+// if limit is non-zero, otherwise in the range [0, UINT64_MAX)
+_TEST_EXPORT _RWSTD_UINT64_T
+rw_rand64 (_RWSTD_UINT64_T = 0);
+
+#  if 32 == _RWSTD_INT_SIZE
+#    define rw_seed(limit)   rw_seed32 (limit)
+#    define rw_rand(limit)   rw_rand32 (limit)
+#  else   // if 32 != _RWSTD_INT_SIZE
+#    define rw_seed(limit)   rw_seed64 (limit)
+#    define rw_rand(limit)   rw_rand64 (limit)
+#  endif   // 32 == _RWSTD_INT_SIZE
+#else   // if !defined (_RWSTD_UINT64_T)
+#  define rw_seed(limit)   rw_seed32 (limit)
+#  define rw_rand(limit)   rw_rand32 (limit)
+#endif   // _RWSTD_UINT64_T
+
+#endif   // RW_RAND_H_INCLUDED