Special Float Generation about genmsg HOT 3 OPEN

That would be a great addition. Please consider to provide a pull request for that enhancement.

from genmsg.

I think the issue may be with this line in genpy: https://github.com/ros/genpy/blob/5008399c9e8f936c0a7067505c2b7cc4c6c09748/src/genpy/generator.py#L864

yield '  %s = %s' % (c.name, c.val)
# where c.name is the constant name and c.val is the actual value
# when converted to string, c.val just becomes nan

There should probably be a check for special values and provide the appropriate strings OR we should add the lines

nan = float('nan')
inf = float('inf')

at the top.

I have created a new issue ros/genpy#126. Perhaps this issue can be closed, as I don't think we can fix it from genmsg?

from genmsg.

Perhaps this issue can be closed, as I don't think we can fix it from genmsg?

genmsg provides the parsing logic and the cross-language API. So the concept needs to be added here first and then genpy can use it to generate Python specific code. gencpp (and other languages) will need to be updated accordingly.

from genmsg.