Menu

SmallestUnsignedTypeSelector.h

Go to the documentation of this file.
00001 /*******************************************************************************
00002 *
00003 * Copyright (c) 2010 Philipp Werner <philipp.werner@st.ovgu.de>
00004 * All rights reserved.
00005 *
00006 *    Redistribution and use in source and binary forms, with or without
00007 *    modification, are permitted provided that the following conditions
00008 *    are met:
00009 *
00010 *    * Redistributions of source code must retain the above copyright
00011 *      notice, this list of conditions and the following disclaimer.
00012 *
00013 *    * Redistributions in binary form must reproduce the above copyright
00014 *      notice, this list of conditions and the following disclaimer in
00015 *      the documentation and/or other materials provided with the
00016 *      distribution.
00017 *
00018 *    * Neither the name of the copyright holders nor the names of
00019 *      contributors may be used to endorse or promote products derived
00020 *      from this software without specific prior written permission.
00021 *
00022 *
00023 *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
00024 *    IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
00025 *    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00026 *    PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
00027 *    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00028 *    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00029 *    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00030 *    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00031 *    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00032 *    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00033 *    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00034 *
00035 *
00036 * $Id$
00037 *
00038 ******************************************************************************/
00039 
00040 #ifndef __SMALLESTUNSIGNEDTYPESELECTOR_H_40A78CED678505__
00041 #define __SMALLESTUNSIGNEDTYPESELECTOR_H_40A78CED678505__
00042 
00043 
00044 #include <stdint.h>
00045 
00046 #include "config/type_traits/if_select_type.h"
00047 
00048 
00053 template <uint64_t value>
00054 struct SmallestUnsignedTypeSelector {
00056     typedef typename if_select_type <
00057                 value <= 0xff,
00058                 uint8_t,
00059                 typename if_select_type <
00060                     value <= 0xffff,
00061                     uint16_t,
00062                     typename if_select_type <
00063                         value <= 0xffffffff,
00064                         uint32_t,
00065                         uint64_t
00066                     >::type
00067                 >::type
00068             >::type type;
00069 };
00070 
00071 
00072 #endif // __SMALLESTUNSIGNEDTYPESELECTOR_H_40A78CED678505__
00073