id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4784	numeric/interval/hw_rounding for __amd64__	Jim Bell <jim@…>	Boris Gubenko	"Interval fails regression tests requiring numeric/interval/hw_rounding.hpp. It gives 
{{{
../boost/numeric/interval/hw_rounding.hpp:40:4: error: #error Boost.Numeric.Interval: Please specify rounding control mechanism.
}}}

My compiler defines __amd64__ (note the double underscores before and after).  How do I determine the hardware rounding control mechanism?

Here's [http://support.amd.com/us/Processor_TechDocs/24592.pdf the AMD64 manual (pdf)], but I don't understand things well enough to say which mechanism it uses.

"	Tasks	new	To Be Determined	interval	Boost Development Trunk	Problem		hardware rounding control __amd64__ regression	jim@…