extl/mpl/math/max_min.h

   1 /* ///////////////////////////////////////////////////////////////////////
   2  * File:                max_min.h
   3  *
   4  * Created:             08.05.13
   5  * Updated:             08.05.13
   6  *
   7  * Brief: The maximum and minimum value
   8  *
   9  * [<Home>]
  10  * Copyright (c) 2008-2020, Waruqi All rights reserved.
  11  * //////////////////////////////////////////////////////////////////// */
  12 #ifndef EXTL_MPL_MATH_MAX_MIN_H
  13 #define EXTL_MPL_MATH_MAX_MIN_H
  14
  15 /*!\file max_min.h
  16  * \brief The maximum and minimum value
  17  */
  18
  19 /* ///////////////////////////////////////////////////////////////////////
  20  * Includes
  21  */
  22 #include "math.h"
  23 #include "../int_.h"
  24
  25 /* ///////////////////////////////////////////////////////////////////////
  26  * ::extl::mpl namespace
  27  */
  28 EXTL_MPL_BEGIN_WHOLE_NAMESPACE
  29
  30 /// The maximum value
  31 template < e_umax_int_t N1, e_umax_int_t N2 >
  32 struct max
  33 {
  34         EXTL_STATIC_MEMBER_CONST(e_umax_int_t, value = (N1 > N2)? N1 : N2);
  35 };
  36
  37 /// The maximum value
  38 template < e_umax_int_t N1, e_umax_int_t N2 >
  39 struct max_2 : max<N1, N2> {};
  40
  41 /// The maximum value
  42 template < e_umax_int_t N1, e_umax_int_t N2, e_umax_int_t N3 >
  43 struct max_3
  44 {
  45         EXTL_STATIC_MEMBER_CONST(e_umax_int_t, value = ((max<N1, N2>::value) > N3)? (max<N1, N2>::value) : N3);
  46 };
  47
  48 /// The maximum value
  49 template < e_umax_int_t N1, e_umax_int_t N2, e_umax_int_t N3, e_umax_int_t N4 >
  50 struct max_4
  51 {
  52         EXTL_STATIC_MEMBER_CONST(e_umax_int_t, value = ((max<N1, N2>::value) > (max<N3, N4>::value))?
  53                                                                                                         (max<N1, N2>::value) : (max<N3, N4>::value));
  54 };
  55
  56 /// The minimum value
  57 template < e_umax_int_t N1, e_umax_int_t N2 >
  58 struct min
  59 {
  60         EXTL_STATIC_MEMBER_CONST(e_umax_int_t, value = (N1 < N2)? N1 : N2);
  61 };
  62
  63 /// The minimum value
  64 template < e_umax_int_t N1, e_umax_int_t N2 >
  65 struct min_2 : min<N1, N2> {};
  66
  67 /// The minimum value
  68 template < e_umax_int_t N1, e_umax_int_t N2, e_umax_int_t N3 >
  69 struct min_3
  70 {
  71         EXTL_STATIC_MEMBER_CONST(e_umax_int_t, value = ((min<N1, N2>::value) < N3)? (min<N1, N2>::value) : N3);
  72 };
  73
  74 /// The minimum value
  75 template < e_umax_int_t N1, e_umax_int_t N2, e_umax_int_t N3, e_umax_int_t N4 >
  76 struct min_4
  77 {
  78         EXTL_STATIC_MEMBER_CONST(e_umax_int_t, value = ((min<N1, N2>::value) < (min<N3, N4>::value))?
  79                                                                                                         (min<N1, N2>::value) : (min<N3, N4>::value));
  80 };
  81 /* ///////////////////////////////////////////////////////////////////////
  82  * Unit testing
  83  */
  84 #ifdef EXTL_MPL_MATH_MAX_MIN_TEST_ENABLE
  85 #       include "unit_test/max_min_test.h"
  86 #endif
  87 /* ///////////////////////////////////////////////////////////////////////
  88  * ::extl::mpl namespace
  89  */
  90 EXTL_MPL_END_WHOLE_NAMESPACE
  91
  92 /* //////////////////////////////////////////////////////////////////// */
  93 #endif /* EXTL_MPL_MATH_MAX_MIN_H */
  94 /* //////////////////////////////////////////////////////////////////// */