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74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
/******************************************************************************
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* Copyright (c) 2019 - present Advanced Micro Devices, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*******************************************************************************/
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/*! @file blis_util.hh
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* blis_util.hh defines all the utility functions to be invoked in CPP template
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* interfaces
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* */
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#ifndef BLIS_UTIL_HH
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#define BLIS_UTIL_HH
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namespace blis {
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// -----------------------------------------------------------------------------
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// for any combination of types, determine associated real, scalar,
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// and complex types.
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//
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// real_type< float > is float
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// real_type< float, double, complex<float> > is double
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//
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// scalar_type< float > is float
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// scalar_type< float, complex<float> > is complex<float>
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// scalar_type< float, double, complex<float> > is complex<double>
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//
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// complex_type< float > is complex<float>
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// complex_type< float, double > is complex<double>
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// complex_type< float, double, complex<float> > is complex<double>
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// for zero types
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template< typename... Types >
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struct real_type_traits;
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// define real_type<> type alias
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template< typename... Types >
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using real_type = typename real_type_traits< Types... >::real_t;
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// for one type
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template< typename T >
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struct real_type_traits<T>
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{
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using real_t = T;
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};
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// for one complex type, strip complex
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template< typename T >
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struct real_type_traits< std::complex<T> >
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{
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using real_t = T;
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};
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} // namespace blis
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#endif // #ifndef BLIS_UTIL_HH
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