接続数

COUNTER379430FROM 2012/5/16

MISRA-C diary(C言語日誌)

MISRA-C >> Article details

2014/06/14

C++N3242, 2011 (40) 5.17 Assignment and compound assignment operators

Tweet ThisSend to Facebook | by kaizen
// 1 filename:cpp2011-5-17.cpp
// ver 0.1 June.12, 2014
//
// 2 original examples and/or notes:
// (c) ISO/IEC JTC1 SC22 WG21 N3242, April 12, 2011
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf
// > 5 Expressions 5.17 Assignment and compound assignment operators
//
// 3 compile and output mechanism:
// (c) Dr. OGAWA Kiyoshi, kaizen at gifu-u.ac.jp,
//
// 4 compile errors and/or warnings:
// 4.1(c) Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
// Target: x86_64-apple-darwin13.2.0,  Thread model: posix
// Command/Options: c++ -std=c++11 -stdlib=libc++ -Wall cpp2011-5-17.cpp 
// (c) LLVM 2003-2009 University of Illinois at Urbana-Champaign.

// 4.2. g++-4.9 (GCC) 4.9.0 20131229 (experimental)
// Copyright (C) 2013 Free Software Foundation, Inc.
// This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// http://gcc.gnu.org/onlinedocs/gcc/Standards.html
// Command/Options: g++-4.9  -std=c++11  -Wall cpp2011-5-17.cpp 
// g++-4.9: error: unrecognized command line option '-stdlib=libc++'
// Configuration:brew install gcc49
//
// 4.3. Visual Studio Express 2013, 
// (c) Microsoft http://www.visualstudio.com/
// SPEC:
// Windows 7, .NET Framework
// (c) VMware, Inc.
// VMWare fusion 6
//
// 5. Hardware:  MacBook Pro, 
//(c) Intel http://ark.intel.com/products/37006/
//Core 2 Duo 2.53GHz, 8GB, 1067MHz DDR3
//
// 6. Special Thanks: Upper organizatios and 
// ITSCJ/IPSJ http://www.itscj.ipsj.or.jp/itscj_english/index.html
// Renesas Electronics Corporation.http://www.renesas.com/
// NPO SESSAME project, http://www.sessame.jp/workinggroup/WorkingGroup3/
// Toyo Corporation, http://www.toyo.co.jp/English/
// Japan Standard Association, http://bit.ly/1lzykg1
// NPO TOPPERS project, https://www.toppers.jp/asp-d-download.html
// Daido Universcity, http://www.daido-it.ac.jp/gakubugakka/computer/index.html
// WITZ Co.Ltd., http://www.witz-inc.co.jp/products/solution/solution.html
// SevenWise.co., http://www.7ws.co.jp/index.html
// TOYOTA Motor Corporation, http://toyota.jp/
// IT planning Inc., http://www.itpl.co.jp/en/index.html
// DENSO Corporation, http://www.globaldenso.com/en/
// Aisin Seiki co. Ltd., http://www.aisin.com/
// Spancion Inc., http://www.spansion.com/
// Yazaki Corporation, http://www.yazaki-group.com/global/
// Pananosic Corporation, http://www.panasonic.net/
// SWEST: Summer Workshop on Embedded System Technologies , http://swest.toppers.jp
// CEST: Consortium for Embedded System Technology, http://www.ertl.jp/CEST/
// JUSE: Union of Japanese Scientists and Engineers, http://www.juse.or.jp/e/
// OSC:Open Source Conference, http://www.ospn.jp/

#include <iostream>
//#include <cstdlib>
//#include <string.h>
//#include <cstring>
//#include <type_traits>
//#include <cassert>
//#include <algorithm>
//#include <cmath>
#include <complex>

using namespace std;

int main() {
complex<double> z;
z = { 1,2 }; // meaning z.operator=({1,2})
z += { 1, 2 }; // meaning z.operator+=({1,2})
int a, b;
a = b = { 1 }; // meaning a=b=1;
//a = { 1 } = b; //error: syntax error
cout << a << std::endl;
cout << b << std::endl;
cout << z << std::endl;
cout << "5 Expressions5.17 Assignment and compound assignment operators"<<std::endl;
return 0;
}
// 1 error
// 1.1 LLVM c++ -std=c++11 -stdlib=libc++ -Wall cpp2011-5-17.cpp 
cpp2011-5-17.cpp:74:3: error: no viable overloaded '+='
z += { 1, 2 }; // meaning z.operator+=({1,2})
~ ^  ~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/complex:402:40: note: candidate function not viable:
      cannot convert initializer list argument to 'double'
    _LIBCPP_INLINE_VISIBILITY complex& operator+=(double __re) {__re_ += __re; return *this;}
                                       ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/complex:413:60: note: candidate template ignored:
      couldn't infer template argument '_Xp'
    template<class _Xp> _LIBCPP_INLINE_VISIBILITY complex& operator+=(const complex<_Xp>& __c)
                                                           ^
1 error generated.
//1.2 gcc: g++-4.9 -std=c++11 -Wall cpp2011-3-17.cpp 
g++-4.9: error: cpp2011-3-17.cpp: No such file or directory
g++-4.9: fatal error: no input files
compilation terminated.
ogawa-sei-no-MacBook-Pro-3:misrac kaizen$ g++-4.9 -std=c++11 -Wall cpp2011-5-17.cpp 
cpp2011-5-17.cpp: In function 'int main()':
cpp2011-5-17.cpp:74:3: error: no match for 'operator+=' (operand types are 'std::complex<double>' and '<brace-enclosed initializer list>')
 z += { 1, 2 }; // meaning z.operator+=({1,2})
   ^
cpp2011-5-17.cpp:74:3: note: candidates are:
In file included from cpp2011-5-17.cpp:67:0:
/usr/local/Cellar/gcc49/4.9-20131229/lib/gcc/x86_64-apple-darwin13.0.0/4.9.0/include/c++/complex:1254:7: note: std::complex<double>& std::complex<double>::operator+=(double)
       operator+=(double __d)
       ^
/usr/local/Cellar/gcc49/4.9-20131229/lib/gcc/x86_64-apple-darwin13.0.0/4.9.0/include/c++/complex:1254:7: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'double'
/usr/local/Cellar/gcc49/4.9-20131229/lib/gcc/x86_64-apple-darwin13.0.0/4.9.0/include/c++/complex:1295:9: note: template<class _Tp> std::complex<double>& std::complex<double>::operator+=(const std::complex<_Tp>&)
         operator+=(const complex<_Tp>& __z)
         ^
/usr/local/Cellar/gcc49/4.9-20131229/lib/gcc/x86_64-apple-darwin13.0.0/4.9.0/include/c++/complex:1295:9: note:   template argument deduction/substitution failed:
cpp2011-5-17.cpp:74:3: note:   couldn't deduce template parameter '_Tp'
 z += { 1, 2 }; // meaning z.operator+=({1,2})
   ^


14:21 | Impressed! | Voted(0) | Comment(0)