Re: [Units] Incorrect definitions for torque, newton_meter

From: Albert Dvornik (bert-boost_at_[hidden])
Date: 2022-08-26 00:27:08

It looks like my previous message wasn't visible by non-HTML readers
(including the list archive) because I didn't configure my so-called
mailer correctly.  Sorry for the duplication and the hassle.

bert

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Hi, all.

The definitions of boost::units::torque_dimension,
boost::units::si::torque, boost::units::si::newton_meter and
boost::units::si::newton_meters seem broken. The most obvious symptom
of this is that boost::units::si::newton_meter isn't the same thing as
boost::units::si::newton * boost::units::si::meter (i.e. an actual N
m), but is instead defined to be equivalent to *N m / rad* instead.

I'm attaching a source file that shows the problem. I've compiled it
with Boost 1.80, g++ 10.2.1.

Am I confused in some way? If not, then I believe that the fix would
be to modify boost/units/physical_dimensions/torque.hpp and remove the
", plane_angle_base_dimension,-1" in the current definition of
torque_dimension.

Regards,
bert Dvornik