Missed isnan -> std::isnan.
Missed isnan -> std::isnan.

Change-Id: I2b700726555b72d7c0adc6d618bb1d69663b6646
Signed-off-by: Brandon Baker <a57ed95460e44c7b5dd675b778bcd98e47bd07ea@intel.com>

cmcantalupo/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm