Frequency setting is sticky on least significant digit

[ikbenkous]

When adjusting rig frequency, user has to scroll past frequency for the klog frequency to update.

See here after tuning down from 14.350.000 down to 14.349.000:

The frequency only updated to 14.349 when I tuned 1 Hz down to 14.348.999.

Additionally: when tuning down in frequency, something like 14.347.001 is interpreted as 14.348.

Behavior is inverse for tuning upwards.

Note: flrig correctly shows what my physical radio says.

[ikbenkous]

Updating Utilities::isSameFreq()'s comparison (if (fabs(fr1 - fr2) < 0.001)) to a precision smaller than 0.001 solves the problem but introduces the following behavior and issues:

1. Seems to correctly round frequency to nearest whole kHz.
2. Issues command to snap radio frequency to nearest whole kHz on transition if not in "read-only" mode.
3. 13.349.500 is rounded upwards.

Further behavior with internal storage and ADIF exports what have you is untested.

Something like 13.349.500 should probably be rounded downwards to 13.349 since copying the leading digits off your radio is the easiest. Or is there some standard to this?

Anyhow, frequency precision is a must here since I have QSOs with a trailing 500 Hz and hear people even use the nearest 100 Hz on 20 meters.

[ikbenkous]

Fixed by #626.