Subject: [boost] Boost.units autoscaling doesn't seem to work with the measurement type.
From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2012-04-26 13:29:15
I have previously used Boost.Units and autoscaled using << engineering_prefix nicely,
and this works as expected for quantity of type double.
but it seems that code that I believe worked previously does not autoscale when using a
*user-defined type*, like the measurement example in kitchen_sink.cpp.
To confirm this, I have added after //[kitchen_sink_snippet_8 in kitchen_sink.cpp at line 445
a measurement quantity where the length is long enough to trigger conversion to km, thus
quantity<length,measurement<double> > biglen(measurement<double>(12345.0,123.0)*meters);
std::cout << "Biglen autoscaled "<< engineering_prefix << biglen << std::endl;
but I get a *unscaled* value :-(
Biglen autoscaled 12345(+/-123) m
rather than the expected conversion to kilometers
12.345(+/- 0.123) km
Am I doing something wrong, or has something changed?
Microsoft Visual Studio 2010
Version 10.0.40219.1 SP1Rel
Microsoft .NET Framework
Version 4.0.30319 SP1Rel
--- Paul A. Bristow, Prizet Farmhouse, Kendal LA8 8AB UK +44 1539 561830 07714330204 pbristow_at_[hidden]