/usr/include/trilinos/Teuchos_getConst.hpp is in libtrilinos-teuchos-dev 12.4.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | // @HEADER
// ***********************************************************************
//
// Teuchos: Common Tools Package
// Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
// @HEADER
#ifndef TEUCHOS_GET_CONST_HPP
#define TEUCHOS_GET_CONST_HPP
#include "Teuchos_ConfigDefs.hpp"
namespace Teuchos {
/** \brief Return a constant reference to an object given a non-const reference.
* \tparam T The type (without const qualifier) to make const.
*
* This template function provides a shorthand for
* \verbatim const_cast<const T&>(t) \endverbatim
* as
* \verbatim getConst(t) \endverbatim
* This saves you the trouble of typing the name of the class,
* and also saves readers of your code from looking at the
* (possibly long) class name.
*
* Here is an example showing why you might want to use this function.
* \code
* // A class with a very long name.
* class MyVeryLongClassNameWhichIsIndeedQuiteLongIsItNot { ... };
*
* // A function which takes a const reference to an instance of that class.
* void f1 (const MyVeryLongClassNameWhichIsIndeedQuiteLongIsItNot& x)
*
* // A function which takes a nonconst reference to an instance of that class,
* // but needs to call f1, which takes a const reference.
* void f2 (MyVeryLongClassNameWhichIsIndeedQuiteLongIsItNot& x) {
* // ... do some stuff with x ...
* // Call f1. Notice how few characters this takes,
* // compared with a const_cast.
* f1 (getConst (x));
* // ... do other stuff ...
* }
* \endcode
*
* \ingroup teuchos_language_support_grp
*/
template<class T>
inline const T& getConst( T& t ) { return t; }
} // end namespace Teuchos
#endif // TEUCHOS_GET_CONST_HPP
|