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* altos: Switch APRS to compressed position formatKeith Packard2014-01-14
| | | | | | This provides lat/lon/alt in fewer bytes while improving precision. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Add sinf to math codeKeith Packard2013-10-27
| | | | | | Needed for the quaternion gyro tracking code Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Add floating point math functions from newlibKeith Packard2013-10-25
These are all BSD licensed, so we can simply include them directly Signed-off-by: Keith Packard <keithp@keithp.com>