Default to MONOTONIC clock for timer methods to avoid falling victim to
clock corrections. Changed signatures from accepting pointers since
this is not needed an complicates calls and Java/JS/Python bindings.
* Switched from nanosleep to clock_nanosleep to allow developers to
provide a clock for LINUX
* Default upm_clock_init to CLOCK_MONOTONIC
* Updated logic to calculating delay and elapsed to be more readable
* Added ns flavors for completeness
* Refactored all upm_* delay/timer methods
* Added #else for preprocessor cases w/o an #else
* Added test for AQI
* Added test fixture with logic to identify a minimum delay time
which is used as a metric for testing all delay methods
* Much more lenient unit testing of delays to minimize false CI
failures
Signed-off-by: Noel Eck <noel.eck@intel.com>
Added explicit error for sign compares to CMake. Updated a handful of C
source which compared unsigned vs signed.
Signed-off-by: Noel Eck <noel.eck@intel.com>
