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[extensions][ttmath] implement binary arithmetic operators for ttmath_big as free functions

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Menelaos Karavelas
2015-03-16 10:26:34 +02:00
parent 7b4798231e
commit 6dff815238
1 changed files with 32 additions and 29 deletions
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61
include/boost/geometry/extensions/contrib/ttmath_stub.hpp
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@@ -1,8 +1,13 @@
// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
// This file was modified by Oracle on 2014, 2015.
// Modifications copyright (c) 2014-2015, Oracle and/or its affiliates.
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
@@ -116,43 +121,18 @@ struct ttmath_big : ttmath::Big<1,4>
: ttmath::Big<1,4>(v)
{}
// needed since the binary operator+ needs to be defined
// unary operator+() is implemented for completeness
inline ttmath_big const& operator+() const
{
return *this;
}
// needed in order for the result of the addition to be a ttmath_big object
inline ttmath_big operator+(ttmath_big const& other) const
{
return ttmath::Big<1,4>::operator+(other);
}
// needed in order to work with boost::geometry::math::abs
inline ttmath_big operator-() const
{
return ttmath::Big<1,4>::operator-();
}
// needed because unary operator-() is defined (above)
inline ttmath_big operator-(ttmath_big const& other) const
{
return ttmath::Big<1,4>::operator-(other);
}
// needed in order for the result of the multiplication to be a
// ttmath_big object
inline ttmath_big operator*(ttmath_big const& other) const
{
return ttmath::Big<1,4>::operator*(other);
}
// needed in order for the result of the division to be a ttmath_big object
inline ttmath_big operator/(ttmath_big const& other) const
{
return ttmath::Big<1,4>::operator/(other);
}
/*
inline operator double() const
{
@@ -166,6 +146,29 @@ struct ttmath_big : ttmath::Big<1,4>
*/
};
// arithmetic operators for ttmath_big objects, defined as free functions
inline ttmath_big operator+(ttmath_big const& x, ttmath_big const& y)
{
return static_cast<ttmath::Big<1,4> const&>(x).operator+(y);
}
inline ttmath_big operator-(ttmath_big const& x, ttmath_big const& y)
{
return static_cast<ttmath::Big<1,4> const&>(x).operator-(y);
}
inline ttmath_big operator*(ttmath_big const& x, ttmath_big const& y)
{
return static_cast<ttmath::Big<1,4> const&>(x).operator*(y);
}
inline ttmath_big operator/(ttmath_big const& x, ttmath_big const& y)
{
return static_cast<ttmath::Big<1,4> const&>(x).operator/(y);
}
namespace boost{ namespace geometry { namespace math
{