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Implement N3779 - User-defined Literals for std::complex, part 2 of UDL for Standard Library Types

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2013-09-27  Ed Smith-Rowland  <3dw4rd@verizon.net>

	Implement N3779 - User-defined Literals for std::complex,
	part 2 of UDL for Standard Library Types
	* include/std/complex: Add complex literal operators.
	* testsuite/26_numerics/complex/literals/types.cc: New.
	* testsuite/26_numerics/complex/literals/values.cc: New.

From-SVN: r203940
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Ed Smith-Rowland 2013-10-23 00:09:19 +00:00 committed by Edward Smith-Rowland
parent df2ba61287
commit ae5543e662
4 changed files with 136 additions and 0 deletions
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8
libstdc++-v3/ChangeLog
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@ -1,3 +1,11 @@
2013-10-22 Ed Smith-Rowland <3dw4rd@verizon.net>
Implement N3779 - User-defined Literals for std::complex,
part 2 of UDL for Standard Library Types
* include/std/complex: Add complex literal operators.
* testsuite/26_numerics/complex/literals/types.cc: New.
* testsuite/26_numerics/complex/literals/values.cc: New.
2013-10-21 Edward Smith-Rowland <3dw4rd@verizon.net>
PR libstdc++/58804

34
libstdc++-v3/include/std/complex
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@ -1924,6 +1924,40 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
conj(_Tp __x)
{ return __x; }
#if __cplusplus > 201103L
inline namespace literals {
inline namespace complex_literals {
constexpr std::complex<float>
operator""if(long double __num)
{ return std::complex<float>{0.0F, static_cast<float>(__num)}; }
constexpr std::complex<float>
operator""if(unsigned long long __num)
{ return std::complex<float>{0.0F, static_cast<float>(__num)}; }
constexpr std::complex<double>
operator""i(long double __num)
{ return std::complex<double>{0.0, static_cast<double>(__num)}; }
constexpr std::complex<double>
operator""i(unsigned long long __num)
{ return std::complex<double>{0.0, static_cast<double>(__num)}; }
constexpr std::complex<long double>
operator""il(long double __num)
{ return std::complex<long double>{0.0L, __num}; }
constexpr std::complex<long double>
operator""il(unsigned long long __num)
{ return std::complex<long double>{0.0L, static_cast<long double>(__num)}; }
} // inline namespace complex_literals
} // inline namespace literals
#endif // C++14
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

46
libstdc++-v3/testsuite/26_numerics/complex/literals/types.cc Normal file
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@ -0,0 +1,46 @@
// { dg-options "-std=c++1y" }
// { dg-do compile }
// Copyright (C) 2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <complex>
#include <type_traits>
void
test02()
{
using namespace std::literals::complex_literals;
static_assert(std::is_same<decltype(1.0if), std::complex<float>>::value,
"1.0if is std::complex<float>");
static_assert(std::is_same<decltype(1if), std::complex<float>>::value,
"1if is std::complex<float>");
static_assert(std::is_same<decltype(1.0i), std::complex<double>>::value,
"1.0i is std::complex<double>");
static_assert(std::is_same<decltype(1i), std::complex<double>>::value,
"1i is std::complex<double>");
static_assert(std::is_same<decltype(1.0il), std::complex<long double>>::value,
"1.0il is std::complex<long double>");
static_assert(std::is_same<decltype(1il), std::complex<long double>>::value,
"1il is std::complex<long double>");
}

48
libstdc++-v3/testsuite/26_numerics/complex/literals/values.cc Normal file
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@ -0,0 +1,48 @@
// { dg-options "-std=gnu++1y" }
// { dg-do run }
// Copyright (C) 2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <complex>
#include <testsuite_hooks.h>
void
test02()
{
using namespace std::literals::complex_literals;
std::complex<float> j1 = 1.0if;
std::complex<float> k1 = 1if;
std::complex<double> j2 = 2.0i;
std::complex<double> k2 = 2i;
std::complex<long double> j4 = 4.0il;
std::complex<long double> k4 = 4il;
VERIFY( j1 == std::complex<float>(0.0F, 1.0F) );
VERIFY( k1 == std::complex<float>(0.0F, 1.0F) );
VERIFY( j2 == std::complex<double>(0.0, 2.0) );
VERIFY( k2 == std::complex<double>(0.0, 2.0) );
VERIFY( j4 == std::complex<long double>(0.0L, 4.0L) );
VERIFY( k4 == std::complex<long double>(0.0L, 4.0L) );
}
int
main()
{
test02();
}