6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-07-07 08:28:57 +00:00
Code Issues Projects Releases Wiki Activity

Moved down to a single divide.

Browse Source
This commit is contained in:
Thomas Harte 2016-07-14 19:45:08 -04:00
parent 481475a0f4
commit 6b4fec37ff
1 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Storage/Disk/DigitalPhaseLockedLoop.cpp
View File

@ -69,12 +69,7 @@ void DigitalPhaseLockedLoop::add_pulse()
sum_x_squared += (float)x*x;
}
sum_xy /= (float)_length_of_history;
sum_x /= (float)_length_of_history;
sum_y /= (float)_length_of_history;
sum_x_squared /= (float)_length_of_history;
float gradient = (sum_xy - sum_x*sum_y) / (sum_x_squared - sum_x*sum_x);
float gradient = ((float)_length_of_history*sum_xy - sum_x*sum_y) / ((float)_length_of_history*sum_x_squared - sum_x*sum_x);
_current_window_length += (unsigned int)(gradient / 2.0);
if(_current_window_length < _clocks_per_bit - _tolerance) _current_window_length = _clocks_per_bit - _tolerance;
if(_current_window_length > _clocks_per_bit + _tolerance) _current_window_length = _clocks_per_bit + _tolerance;