id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6052	unqualified sqrt() fails with SunCC	Fedor Sergeev <Fedor.Sergeev@…>	Lucanus Simonson	"polygon/gtl_boost_unit_test fails to compile with SunCC

{{{
] sunCC -library=stlport4 -I. libs/polygon/test/gtl_boost_unit_test.cpp
...
""./boost/polygon/rectangle_concept.hpp"", line 934: Error: The function ""sqrt"" must have a prototype.
""libs/polygon/test/gtl_boost_unit_test.cpp"", line 794:     Where: While instantiating ""boost::polygon::euclidean_distance<boost::polygon::rectangle_data<int>, boost::polygon::rectangle_data<int>>(const boost::
""libs/polygon/test/gtl_boost_unit_test.cpp"", line 794:     Where: Instantiated from non-template code.
...
]
}}}

Polygon sources use quite a number of unqualified sqrt() calls.
However the standard header they include - '''{{{<cmath>}}}''' - is not required to inject math functions into the global namespace.
Thus the only standard way to use these functions (sqrt included) is via std:: namespace.

All the uses of sqrt should be converted to std::sqrt, otherwise compilers with strictly conforming STLs (like SunCC -stlport4) will not be able to compile.

(suggested patch attached)"	Bugs	closed	To Be Determined	polygon	Boost 1.47.0	Problem	fixed