Unsufficient precision when storing sine phases

[massimo ceraolo]

1) Load Modelica.Blocks.Sources.Sine or Modelica.Electrical.Sources.Sine
2) Click on the model icon and choose as phase 90 (they are degrees)
3) Click again on the icon: the phase is now 90.002.

This is because phases are stored in the model in radians as 6-digit strings corresponding to simple precision.

I think that more should be used. I understand that it is not optimal to use the full double-precision for all model numbers, since .mo readability would reduce. I would not like to see 1.00000000000001 just to say 1.
Probably a good compromise is to convert internal binary representation in decimal form using, say, 10-12 digits, and truncating final zeros, whenever present.