1 //=================================================================================================
2 /*!
3 //  \file blaze/util/mpl/Min.h
4 //  \brief Header file for the Min_t alias template
5 //
6 //  Copyright (C) 2012-2020 Klaus Iglberger - All Rights Reserved
7 //
8 //  This file is part of the Blaze library. You can redistribute it and/or modify it under
9 //  the terms of the New (Revised) BSD License. Redistribution and use in source and binary
10 //  forms, with or without modification, are permitted provided that the following conditions
11 //  are met:
12 //
13 //  1. Redistributions of source code must retain the above copyright notice, this list of
14 //     conditions and the following disclaimer.
15 //  2. Redistributions in binary form must reproduce the above copyright notice, this list
16 //     of conditions and the following disclaimer in the documentation and/or other materials
17 //     provided with the distribution.
18 //  3. Neither the names of the Blaze development group nor the names of its contributors
19 //     may be used to endorse or promote products derived from this software without specific
20 //     prior written permission.
21 //
22 //  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
23 //  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 //  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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32 */
33 //=================================================================================================
34 
35 #ifndef _BLAZE_UTIL_MPL_MIN_H_
36 #define _BLAZE_UTIL_MPL_MIN_H_
37 
38 
39 //*************************************************************************************************
40 // Includes
41 //*************************************************************************************************
42 
43 #include <blaze/util/mpl/If.h>
44 #include <blaze/util/mpl/Less.h>
45 
46 
47 namespace blaze {
48 
49 //=================================================================================================
50 //
51 //  CLASS DEFINITION
52 //
53 //=================================================================================================
54 
55 //*************************************************************************************************
56 /*!\brief Compile time value evaluation.
57 // \ingroup mpl
58 //
59 // The Min_t alias template selects the smaller of the two given template arguments \a T1
60 // and \a T2. In order for Min_t to be able to determine the smaller type, both arguments
61 // are required to have a nested member \a value. The result of the minimum operation can be
62 // accessed via the nested member \a value, the resulting type is available via the nested
63 // type \a ValueType.
64 
65    \code
66    blaze::Min_t< Int_t<3> , Int_t<2>  >::value      // Results in 2
67    blaze::Min_t< Long_t<3>, Int_t<2>  >::ValueType  // Results in int
68    blaze::Min_t< Int_t<3> , Long_t<2> >::ValueType  // Results in long
69    \endcode
70 */
71 template< typename T1    // Type of the first compile time value
72         , typename T2 >  // Type of the second compile time value
73 using Min_t = If_t< Less_t<T1,T2>::value, T1, T2 >;
74 //*************************************************************************************************
75 
76 } // namespace blaze
77 
78 #endif
79