temporary.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
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#ifndef INCLUDED_O3TL_TEMPORARY_HXX
#define INCLUDED_O3TL_TEMPORARY_HXX

#include <sal/config.h>

namespace o3tl
{
// Cast an rvalue to an lvalue.  Can be useful if a function parameter is a pointer/reference to T,
// and some call site doesn't need the value beyond the call itself (e.g., in a call like
// std::modf(x, &o3tl::temporary(double())) to obtain the fractional part of x, ignoring the
// integral part).
template <typename T> constexpr T& temporary(T&& x) { return x; }
template <typename T> constexpr T& temporary(T&) = delete;
}

#endif /* INCLUDED_O3TL_TEMPORARY_HXX */

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