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SmallestSignedTypeSelector.h

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00001 /*******************************************************************************
00002 *
00003 * Copyright (c) 2010 Marcus Foerster <MarcusFoerster1@gmx.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
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00025 *    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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00029 *    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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00038 ******************************************************************************/
00039 
00040 #ifndef __SMALLESTSIGNEDTYPESELECTOR_H_40A78CED678505__
00041 #define __SMALLESTSIGNEDTYPESELECTOR_H_40A78CED678505__
00042 
00043 #include <stdint.h>
00044 
00045 #include "config/type_traits/if_select_type.h"
00046 
00051 template <int64_t value>
00052 struct SmallestSignedTypeSelector {
00053         typedef typename if_select_type<
00054                           (static_cast<int8_t>(value) == value),
00055                           int8_t,
00056                           typename if_select_type<
00057                            (static_cast<int16_t>(value) == value),
00058                            int16_t,
00059                            typename if_select_type<
00060                             (static_cast<int32_t>(value) == value),
00061                             int32_t,
00062                             int64_t
00063                            >::type
00064                           >::type
00065                          >::type type;
00066 };
00067 
00068 
00069 #endif // __SMALLESTSIGNEDTYPESELECTOR_H_40A78CED678505__