watch window double precision vars shown as single precision LPC1768

When debugging my GPS application, the watch window is only showing what appears to be single precision for my doubles.

The only way to view the doubles is to create another variable carrying only the fractional part of my double and multiplying that by 1000

double value longitude = 147.2465233333 degrees

Watch value displayed = 147.247 (Very low precision)

To see the precision level I require I have to create a second var and initially strip the integer part and multiply the result by 1000

double fraction = (longitude - 147.0) * 1000.0 = 2465.23

I then then manually divide the result on paper by 1000 to get 0.246523 then add it to the integer part to get 147.246523

surely there is a way to show double precision numbers in the watch window using the decimal setting?

Mark

Michael Johnson

Do you have "Treat double as float" set to "yes"?

Mark Boyce

No, but I just found a section under Tools->Options->Debugging->Display Options->Display Floating Point Number In which was set to %.8g

I've now set it to %.12g and it's now working for me.

Thanks