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complex (complex<>::real(_Tp), [...]): Add per DR 387.

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2008-05-25  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/std/complex (complex<>::real(_Tp), complex<>::imag(_Tp),
	complex<float>::real(float), complex<float>::imag(float),
	complex<double>::real(double), complex<double>::imag(double),
	complex<long double>::real(long double),
	complex<long double>::imag(long double)): Add per DR 387.
	(complex<>::real(), complex<>::imag(), complex<float>::real(),
	complex<float>::imag(), complex<double>::real(),
	complex<double>::imag(), complex<long double>::real(),
	complex<long double>::imag(long double)): Adjust in C++0x mode.
	(real(complex<>&), imag(complex<>&), real(const complex<>&),
	imag(const complex<>&)): Likewise.
	* testsuite/26_numerics/complex/dr387.cc: New.
	* doc/xml/manual/intro.xml: Add an entry for DR 387.

From-SVN: r135878
This commit is contained in:
Paolo Carlini 2008-05-25 18:59:19 +00:00 committed by Paolo Carlini
parent 5ec81069e5
commit 23ed71c60c
4 changed files with 171 additions and 7 deletions
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16
libstdc++-v3/ChangeLog
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@ -1,3 +1,19 @@
2008-05-25 Paolo Carlini <paolo.carlini@oracle.com>
* include/std/complex (complex<>::real(_Tp), complex<>::imag(_Tp),
complex<float>::real(float), complex<float>::imag(float),
complex<double>::real(double), complex<double>::imag(double),
complex<long double>::real(long double),
complex<long double>::imag(long double)): Add per DR 387.
(complex<>::real(), complex<>::imag(), complex<float>::real(),
complex<float>::imag(), complex<double>::real(),
complex<double>::imag(), complex<long double>::real(),
complex<long double>::imag(long double)): Adjust in C++0x mode.
(real(complex<>&), imag(complex<>&), real(const complex<>&),
imag(const complex<>&)): Likewise.
* testsuite/26_numerics/complex/dr387.cc: New.
* doc/xml/manual/intro.xml: Add an entry for DR 387.
2008-05-25 Paolo Carlini <paolo.carlini@oracle.com>
* include/std/complex: Trivial stylistic changes, define inline

26
libstdc++-v3/doc/xml/manual/intro.xml
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@ -475,19 +475,21 @@
<varlistentry><term><ulink url="../ext/lwg-defects.html#303">303</ulink>:
<emphasis>Bitset input operator underspecified</emphasis>
</term>
<listitem><para>Basically, compare the input character to <code>is.widen(0)</code>
and <code>is.widen(1)</code>.
<listitem><para>Basically, compare the input character to
<code>is.widen(0)</code> and <code>is.widen(1)</code>.
</para></listitem></varlistentry>
<varlistentry><term><ulink url="../ext/lwg-defects.html#305">305</ulink>:
<emphasis>Default behavior of codecvt&lt;wchar_t, char, mbstate_t&gt;::length()</emphasis>
<emphasis>Default behavior of codecvt&lt;wchar_t, char,
mbstate_t&gt;::length()</emphasis>
</term>
<listitem><para>Do not specify what <code>codecvt&lt;wchar_t, char, mbstate_t&gt;::do_length</code>
must return.
<listitem><para>Do not specify what <code>codecvt&lt;wchar_t, char,
mbstate_t&gt;::do_length</code> must return.
</para></listitem></varlistentry>
<varlistentry><term><ulink url="../ext/lwg-defects.html#328">328</ulink>:
<emphasis>Bad sprintf format modifier in money_put&lt;&gt;::do_put()</emphasis>
<emphasis>Bad sprintf format modifier in
money_put&lt;&gt;::do_put()</emphasis>
</term>
<listitem><para>Change the format string to &quot;%.0Lf&quot;.
</para></listitem></varlistentry>
@ -498,8 +500,18 @@
<listitem><para>Add const overloads of <code>is_open</code>.
</para></listitem></varlistentry>
<varlistentry><term><ulink url="../ext/lwg-active.html#387">387</ulink>:
<emphasis>std::complex over-encapsulated</emphasis>
</term>
<listitem><para>Add the <code>real(T)</code> and <code>imag(T)</code>
members; in C++0x mode, also adjust the existing
<code>real()</code> and <code>imag()</code> members and
free functions.
</para></listitem></varlistentry>
<varlistentry><term><ulink url="../ext/lwg-defects.html#389">389</ulink>:
<emphasis>Const overload of valarray::operator[] returns by value</emphasis>
<emphasis>Const overload of valarray::operator[] returns
by value</emphasis>
</term>
<listitem><para>Change it to return a <code>const T&amp;</code>.
</para></listitem></varlistentry>

84
libstdc++-v3/include/std/complex
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@ -131,6 +131,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
complex(const complex<_Up>& __z)
: _M_real(__z.real()), _M_imag(__z.imag()) { }
#ifdef __GXX_EXPERIMENTAL_CXX0X__
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
_Tp real() const
{ return _M_real; }
_Tp imag() const
{ return _M_imag; }
#else
/// Return real part of complex number.
_Tp& real()
{ return _M_real; }
@ -146,6 +155,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
/// Return imaginary part of complex number.
const _Tp& imag() const
{ return _M_imag; }
#endif
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
void real(_Tp __val)
{ _M_real = __val; }
void imag(_Tp __val)
{ _M_imag = __val; }
/// Assign this complex number to scalar @a t.
complex<_Tp>& operator=(const _Tp&);
@ -504,6 +522,17 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
}
// Values
#ifdef __GXX_EXPERIMENTAL_CXX0X__
template<typename _Tp>
inline _Tp
real(const complex<_Tp>& __z)
{ return __z.real(); }
template<typename _Tp>
inline _Tp
imag(const complex<_Tp>& __z)
{ return __z.imag(); }
#else
template<typename _Tp>
inline _Tp&
real(complex<_Tp>& __z)
@ -523,6 +552,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
inline const _Tp&
imag(const complex<_Tp>& __z)
{ return __z.imag(); }
#endif
// 26.2.7/3 abs(__z): Returns the magnitude of __z.
template<typename _Tp>
@ -993,6 +1023,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
explicit complex(const complex<double>&);
explicit complex(const complex<long double>&);
#ifdef __GXX_EXPERIMENTAL_CXX0X__
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
float real() const
{ return __real__ _M_value; }
float imag() const
{ return __imag__ _M_value; }
#else
float& real()
{ return __real__ _M_value; }
@ -1004,6 +1043,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
const float& imag() const
{ return __imag__ _M_value; }
#endif
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
void real(float __val)
{ __real__ _M_value = __val; }
void imag(float __val)
{ __imag__ _M_value = __val; }
complex<float>&
operator=(float __f)
@ -1121,6 +1169,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
explicit complex(const complex<long double>&);
#ifdef __GXX_EXPERIMENTAL_CXX0X__
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
double real() const
{ return __real__ _M_value; }
double imag() const
{ return __imag__ _M_value; }
#else
double& real()
{ return __real__ _M_value; }
@ -1132,6 +1189,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
const double& imag() const
{ return __imag__ _M_value; }
#endif
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
void real(double __val)
{ __real__ _M_value = __val; }
void imag(double __val)
{ __imag__ _M_value = __val; }
complex<double>&
operator=(double __d)
@ -1249,6 +1315,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
complex(const complex<double>& __z)
: _M_value(__z.__rep()) { }
#ifdef __GXX_EXPERIMENTAL_CXX0X__
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
long double real() const
{ return __real__ _M_value; }
long double imag() const
{ return __imag__ _M_value; }
#else
long double& real()
{ return __real__ _M_value; }
@ -1260,6 +1335,15 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
const long double& imag() const
{ return __imag__ _M_value; }
#endif
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 387. std::complex over-encapsulated.
void real(long double __val)
{ __real__ _M_value = __val; }
void imag(long double __val)
{ __imag__ _M_value = __val; }
complex<long double>&
operator=(long double __r)

52
libstdc++-v3/testsuite/26_numerics/complex/dr387.cc Normal file
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@ -0,0 +1,52 @@
// 2008-05-22 Paolo Carlini <paolo.carlini@oracle.com>
//
// Copyright (C) 2008 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 2, 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 COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
#include <complex>
#include <testsuite_hooks.h>
// DR 387. std::complex over-encapsulated.
template<typename T>
void
do_test()
{
bool test __attribute__((unused)) = true;
const T r = 1.0;
const T i = -1.0;
const T v = 0.0;
std::complex<T> z1(r, i);
z1.real(v);
VERIFY( z1.real() == v );
VERIFY( z1.imag() == i );
std::complex<T> z2(r, i);
z2.imag(v);
VERIFY( z2.real() == r );
VERIFY( z2.imag() == v );
}
int main()
{
do_test<float>();
do_test<double>();
do_test<long double>();
return 0;
}