Details and sample files http://www.linuxcnc.org/index.php/english/forum/38-general-linuxcnc-questions/29247-discriminant-in-velocity-calculation-error#59262
2.8.0 pre1
To reproduce, pull branch bug424 from git.timeguy.com and run bug424.ngc under sim/axis/axis_mm
This shows an accel violation for a couple servo cycles, between lines 5 and 6.
Fixed by Rob Ellenberg in v2.7.0-pre6-294-gd3a8d71
2.8.0 pre1
To reproduce, pull branch bug424 from git.timeguy.com and run bug424.ngc under sim/axis/axis_mm
This shows an accel violation for a couple servo cycles, between lines 5 and 6.
Fixed by Rob Ellenberg in v2.7.0-pre6-294-gd3a8d71