ccollins476ad commented on issue #1582: use float instead of double
URL: https://github.com/apache/mynewt-core/pull/1582#issuecomment-450227683
 
 
   Does this actually allow for any optimizations?  As @andrzej-kaczmarek said, 
floats are always promoted to doubles anyway, so I am skeptical that this 
actually does anything (but then what do I know?  I am not a compiler...).
   
   If this is a useful change, then it should be conditional on a syscfg 
setting.  `%f` is defined as the double format specifier in the C spec, so that 
should be the default behavior.

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