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// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
// Copyright 2008-2016 National ICT Australia (NICTA)
//
// Licensed 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.
// ------------------------------------------------------------------------
//! \addtogroup promote_type
//! @{
template<typename T1, typename T2>
struct is_promotable
{
static constexpr bool value = false;
typedef T1 result;
};
struct is_promotable_ok
{
static constexpr bool value = true;
};
template<typename T> struct is_promotable<T, T> : public is_promotable_ok { typedef T result; };
template<typename T> struct is_promotable<std::complex<T>, T> : public is_promotable_ok { typedef std::complex<T> result; };
template<> struct is_promotable<std::complex<double>, std::complex<float>> : public is_promotable_ok { typedef std::complex<double> result; };
template<> struct is_promotable<std::complex<double>, float> : public is_promotable_ok { typedef std::complex<double> result; };
template<> struct is_promotable<std::complex<float>, double> : public is_promotable_ok { typedef std::complex<double> result; };
template<typename t> struct is_promotable<std::complex<t>, u64> : public is_promotable_ok { typedef std::complex<t> result; };
template<typename t> struct is_promotable<std::complex<t>, s64> : public is_promotable_ok { typedef std::complex<t> result; };
template<typename t> struct is_promotable<std::complex<t>, ulng_t> : public is_promotable_ok { typedef std::complex<t> result; };
template<typename t> struct is_promotable<std::complex<t>, slng_t> : public is_promotable_ok { typedef std::complex<t> result; };
template<typename T> struct is_promotable<std::complex<T>, s32> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<std::complex<T>, u32> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<std::complex<T>, s16> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<std::complex<T>, u16> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<std::complex<T>, s8> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<std::complex<T>, u8> : public is_promotable_ok { typedef std::complex<T> result; };
template<> struct is_promotable<double, float > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, s64 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, u64 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, slng_t> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, ulng_t> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, s32 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, u32 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, s16 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, u16 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, s8 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<double, u8 > : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<float, s64 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, u64 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, slng_t> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, ulng_t> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, s32 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, u32 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, s16 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, u16 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, s8 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<float, u8 > : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<u64, u32> : public is_promotable_ok { typedef u64 result; };
template<> struct is_promotable<u64, u16> : public is_promotable_ok { typedef u64 result; };
template<> struct is_promotable<u64, u8 > : public is_promotable_ok { typedef u64 result; };
template<> struct is_promotable<s64, u64> : public is_promotable_ok { typedef s64 result; }; // float ?
template<> struct is_promotable<s64, u32> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s64, s32> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s64, s16> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s64, u16> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s64, s8 > : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s64, u8 > : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s32, u32> : public is_promotable_ok { typedef s32 result; }; // float ?
template<> struct is_promotable<s32, s16> : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<s32, u16> : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<s32, s8 > : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<s32, u8 > : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<u32, s16> : public is_promotable_ok { typedef s32 result; }; // float ?
template<> struct is_promotable<u32, u16> : public is_promotable_ok { typedef u32 result; };
template<> struct is_promotable<u32, s8 > : public is_promotable_ok { typedef s32 result; }; // float ?
template<> struct is_promotable<u32, u8 > : public is_promotable_ok { typedef u32 result; };
template<> struct is_promotable<s16, u16> : public is_promotable_ok { typedef s16 result; }; // s32 ?
template<> struct is_promotable<s16, s8 > : public is_promotable_ok { typedef s16 result; };
template<> struct is_promotable<s16, u8 > : public is_promotable_ok { typedef s16 result; };
template<> struct is_promotable<u16, s8> : public is_promotable_ok { typedef s16 result; }; // s32 ?
template<> struct is_promotable<u16, u8> : public is_promotable_ok { typedef u16 result; };
template<> struct is_promotable<s8, u8> : public is_promotable_ok { typedef s8 result; }; // s16 ?
//
// mirrored versions
template<typename T> struct is_promotable<T, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<> struct is_promotable<std::complex<float>, std::complex<double>> : public is_promotable_ok { typedef std::complex<double> result; };
template<> struct is_promotable<float, std::complex<double>> : public is_promotable_ok { typedef std::complex<double> result; };
template<> struct is_promotable<double, std::complex<float> > : public is_promotable_ok { typedef std::complex<double> result; };
template<typename T> struct is_promotable<s64, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<u64, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<slng_t, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<ulng_t, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<s32, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<u32, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<s16, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<u16, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<s8, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<typename T> struct is_promotable<u8, std::complex<T>> : public is_promotable_ok { typedef std::complex<T> result; };
template<> struct is_promotable<float, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<s64, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<u64, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<slng_t, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<ulng_t, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<s32, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<u32, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<s16, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<u16, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<s8, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<u8, double> : public is_promotable_ok { typedef double result; };
template<> struct is_promotable<s64, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<u64, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<slng_t, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<ulng_t, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<s32, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<u32, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<s16, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<u16, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<s8, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<u8, float> : public is_promotable_ok { typedef float result; };
template<> struct is_promotable<u32, u64> : public is_promotable_ok { typedef u64 result; };
template<> struct is_promotable<u16, u64> : public is_promotable_ok { typedef u64 result; };
template<> struct is_promotable<u8, u64> : public is_promotable_ok { typedef u64 result; };
template<> struct is_promotable<u64, s64> : public is_promotable_ok { typedef s64 result; }; // float ?
template<> struct is_promotable<s32, s64> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<u32, s64> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s16, s64> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<u16, s64> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<s8 , s64> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<u8 , s64> : public is_promotable_ok { typedef s64 result; };
template<> struct is_promotable<u32, s32> : public is_promotable_ok { typedef s32 result; }; // float ?
template<> struct is_promotable<s16, s32> : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<u16, s32> : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<s8 , s32> : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<u8 , s32> : public is_promotable_ok { typedef s32 result; };
template<> struct is_promotable<s16, u32> : public is_promotable_ok { typedef s32 result; }; // float ?
template<> struct is_promotable<u16, u32> : public is_promotable_ok { typedef u32 result; };
template<> struct is_promotable<s8 , u32> : public is_promotable_ok { typedef s32 result; }; // float ?
template<> struct is_promotable<u8 , u32> : public is_promotable_ok { typedef u32 result; };
template<> struct is_promotable<u16, s16> : public is_promotable_ok { typedef s16 result; }; // s32 ?
template<> struct is_promotable<s8 , s16> : public is_promotable_ok { typedef s16 result; };
template<> struct is_promotable<u8 , s16> : public is_promotable_ok { typedef s16 result; };
template<> struct is_promotable<s8, u16> : public is_promotable_ok { typedef s16 result; }; // s32 ?
template<> struct is_promotable<u8, u16> : public is_promotable_ok { typedef u16 result; };
template<> struct is_promotable<u8, s8> : public is_promotable_ok { typedef s8 result; }; // s16 ?
template<typename T1, typename T2>
struct promote_type
{
inline static void check()
{
arma_type_check(( is_promotable<T1,T2>::value == false ));
}
typedef typename is_promotable<T1,T2>::result result;
};
template<typename T1, typename T2>
struct eT_promoter
{
typedef typename promote_type<typename T1::elem_type, typename T2::elem_type>::result eT;
};
//! @}
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