Rounding error on Master and OS X Mavericks

[jmstacey]

Just built this from source today, first time user and ran into this bug. If I explicitly set the refresh rate it work work, so it looks like a float rounding issue:

Jon-Staceys-iMac:screenresolution jon$ ./screenresolution set 1024x768x32
2013-10-30 20:38:23.815 screenresolution[1164:507] starting screenresolution argv=./screenresolution set 1024x768x32 
2013-10-30 20:38:23.820 screenresolution[1164:507] Warning: no refresh rate specified, assuming 60Hz
2013-10-30 20:38:23.822 screenresolution[1164:507] Error: mode 1024x768x32@0.000000 not available on display 0
Jon-Staceys-iMac:screenresolution jon$ ./screenresolution set 1024x768x32@0
2013-10-30 20:38:38.603 screenresolution[1165:507] starting screenresolution argv=./screenresolution set 1024x768x32@0 
2013-10-30 20:38:38.609 screenresolution[1165:507] set mode on display 0 to 1024x768x32@0